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United Front the 24th is the one hundred and seventy-third Extra Ops introduced in Metal Slug Attack.

Story[]

The Martians return to Earth, with two Mars People Cadre angered with how wasteful the humans are with their golden garbage. However, they soon spot Invaders in the vicinity and flee.

Elsewhere, Odette shows off her new wings, much to Nowan's disgust as they wonder why she decided to grow some wings. Annette quickly silences Nowan, as Odette took the effort to make these wings and Annette won't let them ruin her younger sister's fun. Annette reminds Odette of their mission, as they are on Earth to investigate some new golden weapons.

Odette finishes up her investigation and concludes that golden units have increased combat capabilities, and because everyone is fighting over them, they too also become good combatants. Annette decides to head to the United Front shop before it closes, as they're also expected to report back soon, although she asks Odette what she would like to do first. Odette wishes to play with the feathered character in the book (the inspiration for her wings). Nowan attempts to tell her that they are fictional characters; Annette tries to silence them, but Odette already heard the word "fictional" and becomes disappointed. However, Annette promises Odette that they'll go to the place the winged character was in the future.

Introduced Units[]

Units Faction Rarity 
MSAUnitSilver
MSAUnit Odette Ver.Innocence
    
 Odette Ver.Innocence
MSA Icon Aliens MSA rarity Super Rare 
MSAUnitBronze
MSAUnit Special Clario
    
 Special Clario
MSA Icon Aliens MSA rarity Rare 
 Golden Huge Hermit Independent MSA rarity Super Rare 
MSAUnitBronze
MSAUnit Golden Big Snail
    
 Golden Big Snail
Independent MSA rarity Rare

Expert Units[]

Expert
Units
Get Unit
MSA event power increase
MSAUnitSilver
MSAUnit Odette Ver.Innocence
    
Box Crank
MSA currency United CoinsMSA event increase 60% MSA currency United CoinsMSA event increase 120% MSA currency United CoinsMSA event increase 200% 
MSAUnitBronze
MSAUnit Special Clario
    
Pre-Acquisition
MSA currency United CoinsMSA event increase 30% MSA currency United CoinsMSA event increase 45% MSA currency United CoinsMSA event increase 60% MSA currency United CoinsMSA event increase 75% 
MSAUnitBronze
MSAUnit Keisetsu
    
Pick Up!!
MSA currency United CoinsMSA event increase 15% MSA currency United CoinsMSA event increase 20% MSA currency United CoinsMSA event increase 25% MSA currency United CoinsMSA event increase 30% 
MSAUnitBronze
MSAUnit Tsukikage
    
Pick Up!!
MSA currency United CoinsMSA event increase 15% MSA currency United CoinsMSA event increase 20% MSA currency United CoinsMSA event increase 25% MSA currency United CoinsMSA event increase 30% 
MSAUnitBronze
MSAUnit Ouka
    
Pick Up!!
MSA currency United CoinsMSA event increase 15% MSA currency United CoinsMSA event increase 20% MSA currency United CoinsMSA event increase 25% MSA currency United CoinsMSA event increase 30% 
Extra Ops
(Previous)

MSA currency United CoinsMSA event increase 10% MSA currency United CoinsMSA event increase 15% MSA currency United CoinsMSA event increase 20% 
MSAUnitBronze
MSAUnit Golden Big Snail
    
United Shop
MSA currency United CoinsMSA event increase 6% MSA currency United CoinsMSA event increase 9% MSA currency United CoinsMSA event increase 12% MSA currency United CoinsMSA event increase 15% 
MSAUnitIron
MSAUnit SV-Camel
    

MSA currency United CoinsMSA event increase 2% MSA currency United CoinsMSA event increase 3% MSA currency United CoinsMSA event increase 4% MSA currency United CoinsMSA event increase 5% MSA currency United CoinsMSA event increase 6%

Stages[]

Solo Attack[]

Difficulty Enemies MSA currency Sortie Points small MSA currency United Coins
MSA difficulty 1-Very Easy
MSAUnitBronze
MSAUnit Man Eater Arche
MSAUnitBronzePlate
MSAUnitLevel0
MSAUnitLevel1
MSAUnit1Star
    
MSAUnitBronze
MSAUnit Golden Big Snail
MSAUnitBronzePlate
MSAUnitLevel0
MSAUnitLevel1
MSAUnit1Star
    
10 100
MSA difficulty 3-Normal
MSAUnitGold
MSAUnit Man Eater Arche
MSAUnitGoldPlate
MSAUnitLevel2
MSAUnitLevel5
MSAUnit3Star
    
MSAUnitGold
MSAUnit Ohumein-Conga (Red)
MSAUnitGoldPlate
MSAUnitLevel2
MSAUnitLevel5
MSAUnit3Star
    
MSAUnitGold
MSAUnit Skull Snail
MSAUnitGoldPlate
MSAUnitLevel2
MSAUnitLevel5
MSAUnit3Star
    
MSAUnitGold
MSAUnit Golden Big Snail
MSAUnitGoldPlate
MSAUnitLevel2
MSAUnitLevel5
MSAUnit3Star
    
20 220
MSA difficulty 5-Very Hard
MSAUnitPlatinum
MSAUnit Pigni Doloma
MSAUnitPlatinumPlate
MSAUnitLevel4
MSAUnitLevel5
MSAUnit4Star
    
MSAUnitPlatinum
MSAUnit Ohumein-Conga(Green)
MSAUnitPlatinumPlate
MSAUnitLevel4
MSAUnitLevel5
MSAUnit4Star
    
MSAUnitPlatinum
MSAUnit Hazmat Soldier(Gold)
MSAUnitPlatinumPlate
MSAUnitLevel4
MSAUnitLevel5
MSAUnit4Star
    
MSAUnitPlatinum
MSAUnit Golden Big Snail
MSAUnitPlatinumPlate
MSAUnitLevel4
MSAUnitLevel5
MSAUnit4Star
    
30 360

Party Attack[]

Difficulty Enemies MSA currency Sortie Points small MSA currency United Coins
MSA difficulty 2-Easy
MSAUnitSilver
MSAUnit Sol Dae Cyclo
MSAUnitSilverPlate
MSAUnitLevel1
MSAUnitLevel5
MSAUnit2Star
    
MSAUnitSilver
MSAUnit Golden Big Snail
MSAUnitSilverPlate
MSAUnitLevel1
MSAUnitLevel5
MSAUnit2Star
    
20 200
MSA difficulty 4-Hard
MSAUnitGold
MSAUnit Skull Snail
MSAUnitGoldPlate
MSAUnitLevel3
MSAUnitLevel0
MSAUnit3Star
    
MSAUnitGold
MSAUnit Ohumein-Conga (Red)
MSAUnitGoldPlate
MSAUnitLevel3
MSAUnitLevel0
MSAUnit3Star
    
MSAUnitGold
MSAUnit Flying Hermit
MSAUnitGoldPlate
MSAUnitLevel3
MSAUnitLevel0
MSAUnit3Star
    
MSAUnitGold
MSAUnit Golden Big Snail
MSAUnitGoldPlate
MSAUnitLevel3
MSAUnitLevel0
MSAUnit3Star
    
40 440
MSA difficulty 6-Hell
MSAUnitPlatinum
MSAUnit Hazmat Soldier(Gold)
MSAUnitPlatinumPlate
MSAUnitLevel5
MSAUnitLevel0
MSAUnit4Star
    
MSAUnitPlatinum
MSAUnit Poison Huge Locust
MSAUnitPlatinumPlate
MSAUnitLevel5
MSAUnitLevel0
MSAUnit4Star
    
MSAUnitPlatinum
MSAUnit Flying Hermit
MSAUnitPlatinumPlate
MSAUnitLevel5
MSAUnitLevel0
MSAUnit4Star
    
MSAUnitPlatinum
MSAUnit Sol Dae Cyclo
MSAUnitPlatinumPlate
MSAUnitLevel5
MSAUnitLevel0
MSAUnit4Star
    
MSAUnitPlatinum
MSAUnit Golden Big Snail
MSAUnitPlatinumPlate
MSAUnitLevel5
MSAUnitLevel0
MSAUnit4Star
    
80 960

United Battle[]

Difficulty Enemies MSA currency Sortie Points small MSA currency United Coins
N/A Random (other players' deck x2) 50 750

Shop[]

Apart from the MSP, each purchase is one-time only.

Daily Update[]

Each stock can only be bought once a day, resetting at 12:00 JTC.

Items MSA currency United Coins
MSA item I ---
MSA currency Medal
MSAUnitPart2
MSAUnitPart0
500
MSA item I ---
MSA currency Medal
MSAUnitPart3
MSAUnitPart0
1,000
MSA item I ---
MSA currency Medal
MSAUnitPart5
MSAUnitPart0
2,000

Golden Huge Hermit[]

Items MSA currency United Coins  Quantity
40,000 1
150,000 1
600,000 1
Zantetsu Sword TYPE-Gold
MSAUnitPartX
MSAUnitPart1
18,000 3
Golden Bat EX TYPE-Gold
MSAUnitPartX
MSAUnitPart1
12,000 3
Snake TYPE-Gold
MSAUnitPartX
MSAUnitPart1
6,000 3
Temporary Armor TYPE-Gold
MSAUnitPartX
MSAUnitPart1
3,000 3

Golden Big Snail[]

Items MSA currency United Coins  Quantity
MSAUnitPartBase
MSAUnit Golden Big Snail
MSAUnitPartOverlay
MSAUnitPartX
MSAUnitPart3
MSAUnitPart0
    
15,000 1
MSAUnitPartBase
MSAUnit Golden Big Snail
MSAUnitPartOverlay
MSAUnitPartX
MSAUnitPart5
MSAUnitPart0
    
30,000 1
MSAUnitPartBase
MSAUnit Golden Big Snail
MSAUnitPartOverlay
MSAUnitPartX
MSAUnitPart1
MSAUnitPart0
MSAUnitPart0
    
60,000 1
MSAUnitPartBase
MSAUnit Golden Big Snail
MSAUnitPartOverlay
MSAUnitPartX
MSAUnitPart1
MSAUnitPart5
MSAUnitPart0
    
90,000 1
Monkey Thief EX(gold)
MSAUnitPartX
MSAUnitPart1
3,000 3
Emblem EX(gold)
MSAUnitPartX
MSAUnitPart1
2,250 3
Molotov Cocktail EX(gold)
MSAUnitPartX
MSAUnitPart1
1,500 3
Handgun
MSAUnitPartX
MSAUnitPart1
750 3

Avatar Icon[]

Items MSA currency United Coins
Golden Huge Hermit 7,500
Golden Big Snail 7,500
Esther Avatar 7,500
Minerva and Giant Caterpillar 7,500

Miscellaneous Items[]

Items MSA currency United Coins  Quantity
MSA item I ---
MSA Silver crank key
MSAUnitPart1
7,500 4
Radar
MSAUnitPartX
MSAUnitPart1
800 3
APLvMax
MSAUnitPartX
MSAUnitPart1
1,500 3
Reward Up
MSAUnitPartX
MSAUnitPart1
2,000 3
Mobile Satellite
MSAUnitPartX
MSAUnitPart1
400 3
Pants
MSAUnitPartX
MSAUnitPart1
1,500 3

Limitless[]

Unlimited amounts of MSP can be bought from the shop at any time during the duration of the event.

Items MSA currency United Coins
MSD currency MSP 10,000 50
MSD currency MSP 100,000 500
MSD currency MSP 1,000,000 5,000
MSD currency MSP 10,000,000 50,000

Milestones[]

Solo Attack - Party Attack - United Battle

Points Rewards Total Rewards
MSA currency MSP MSA currency Medal MSA currency United Coins MSA currency Gold Bar MSA currency Medal Battle MSA currency Medal Guild MSA Silver crank key
1,000
MSA item I ---
MSA currency United Coins
MSAUnitPart1
MSAUnitPart0
MSAUnitPart0
MSAUnitPart0
1,000
5,000 100,000 MSA currency MSP 100,000 1,000
10,000
MSA item I ---
MSA currency Gold Bar
MSAUnitPart5
MSAUnitPart0
MSAUnitPart0
100,000 1,000 500
20,000 200,000 MSA currency MSP 300,000 1,000 500
30,000
MSA item I ---
MSA currency Medal Battle
MSAUnitPart5
MSAUnitPart0
MSAUnitPart0
300,000 1,000 500 500
50,000 300,000 MSA currency MSP 600,000 1,000 500 500
100,000
MSA item I ---
MSA currency Medal Guild
MSAUnitPart5
MSAUnitPart0
MSAUnitPart0
600,000 1,000 500 500 500
200,000 400,000 MSA currency MSP 1M 1,000 500 500 500
300,000
MSA item I ---
MSA currency United Coins
MSAUnitPart1
MSAUnitPart0
MSAUnitPart0
MSAUnitPart0
1M 2,000 500 500 500
400,000 500,000 MSA currency MSP 1.5M 2,000 500 500 500
500,000
MSA item I ---
MSA currency Gold Bar
MSAUnitPart5
MSAUnitPart0
MSAUnitPart0
1.5M 2,000 1,000 500 500
600,000 600,000 MSA currency MSP 2.1M 2,000 1,000 500 500
700,000
MSA item I ---
MSA currency Medal Battle
MSAUnitPart5
MSAUnitPart0
MSAUnitPart0
2.1M 2,000 1,000 1,000 500
800,000 700,000 MSA currency MSP 2.8M 2,000 1,000 1,000 500
900,000
MSA item I ---
MSA currency Medal Guild
MSAUnitPart5
MSAUnitPart0
MSAUnitPart0
2.8M 2,000 1,000 1,000 1,000
1M 800,000 MSA currency MSP 3.6M 2,000 1,000 1,000 1,000
1.1M
MSA item I ---
MSA currency United Coins
MSAUnitPart1
MSAUnitPart5
MSAUnitPart0
MSAUnitPart0
3.6M 3,500 1,000 1,000 1,000
1.2M 900,000 MSA currency MSP 4.5M 3,500 1,000 1,000 1,000
1.3M
MSA item I ---
MSA currency Gold Bar
MSAUnitPart5
MSAUnitPart0
MSAUnitPart0
4.5M 3,500 1,500 1,000 1,000
1.4M 1M MSA currency MSP 5.5M 3,500 1,500 1,000 1,000
1.5M
MSA item I ---
MSA Silver crank key
MSAUnitPart1
5.5M 3,500 1,500 1,000 1,000 1
1.6M
MSA item I ---
MSA currency Medal Battle
MSAUnitPart5
MSAUnitPart0
MSAUnitPart0
5.5M 3,500 1,500 1,500 1,000 1
1.7M 1.1M MSA currency MSP 6.6M 3,500 1,500 1,500 1,000 1
1.8M
MSA item I ---
MSA currency Medal Guild
MSAUnitPart5
MSAUnitPart0
MSAUnitPart0
6.6M 3,500 1,500 1,500 1,500 1
1.9M 1.2M MSA currency MSP 7.8M 3,500 1,500 1,500 1,500 1
2M
MSA item I ---
MSA currency United Coins
MSAUnitPart1
MSAUnitPart5
MSAUnitPart0
MSAUnitPart0
7.8M 5,000 1,500 1,500 1,500 1
2.1M 1.3M MSA currency MSP 9.1M 5,000 1,500 1,500 1,500 1
2.2M
MSA item I ---
MSA currency Gold Bar
MSAUnitPart5
MSAUnitPart0
MSAUnitPart0
9.1M 5,000 2,000 1,500 1,500 1
2.3M 1.4M MSA currency MSP 10.5M 5,000 2,000 1,500 1,500 1
2.4M
MSA item I ---
MSA currency Medal Battle
MSAUnitPart5
MSAUnitPart0
MSAUnitPart0
10.5M 5,000 2,000 2,000 1,500 1
2.5M 1.5M MSA currency MSP 12M 5,000 2,000 2,000 1,500 1
2.75M
MSA item I ---
MSA currency Medal Guild
MSAUnitPart5
MSAUnitPart0
MSAUnitPart0
12M 5,000 2,000 2,000 2,000 1
3M
MSA item I ---
MSA Silver crank key
MSAUnitPart1
12M 5,000 2,000 2,000 2,000 2
3.25M
MSA item I ---
MSA currency United Coins
MSAUnitPart2
MSAUnitPart0
MSAUnitPart0
MSAUnitPart0
12M 7,000 2,000 2,000 2,000 2
3.5M
MSA item I ---
MSA currency Medal
MSAUnitPart5
MSAUnitPart0
MSAUnitPart0
12M 500 7,000 2,000 2,000 2,000 2
MSAlogo
Extra Opsv t e
Mars Attack Jupiter King's Extra Ops Mummy's Score Attack!! Ptolemaic Attack Pirates Attack Golden Soldier Black Future CODE : ASSAULT The King of Weapons
Metal Slug Alice Zombie Parade Alien vs. Morden Boy Memories Sand Locker Halloween Train Agent Sally Mutation War Food Army! Destroy the Tower
Invader Girl Operation Ikari Santa Trap Merry Christmas! Queen's Battle Flying Ace Crazy Drive!! Food Army! 2nd X Day Pharaoh Rebirth
Chocolate of the Dead Signal Red Power of New Versions Signs of Curse Tough & Cool Wild Edge Pirate's Ghost Amadeus Revenge Snatch Wars Jungle Monkeys
Rider's High Green Monster Mad Scientists Snatch Wars Season 2 Break In The Shell Maximum Evolution Next One Snatch Wars Season 3 Clash of the Worlds Bicycle Maiden
Glow in the Dark Snatch Wars Season 4 Double Face Last Resort No Limit Rising Iron Snatch Wars Season 5 Silent Assassin Supply Lines Eternal Way
Snatch Wars Season 6 Dancing Brave Blood Runaway Royal Identity Cross Over Fate Snatch Wars Season 7 White Breath Out of Control Same Direction Snatch Wars Season 8
Time Collision Fall of Disaster United Front Snatch Wars Season 9 Sadistic Emotion Top Prospect Snatch Wars Season 10 United Front the 2nd Revival of Intention Hero of Justice
Snatch Wars Season 11 Kung Fu Guru United Front the 3rd Butterfly Disaster Advance of Fire Beast Power United Front the 4th Protection of the Fortress Fist Invasion Fire Inhibition
United Front the 5th Best Partner One Mind First Rebellion United Front the 6th Growing Ninja Encounter of Unknown Try Line 1st United Front the 7th Hot Trap
Sky King Theory of Evolution Try Line 2nd Dark Invitation United Front the 8th Tropical Battles Strange Town Auto Battle United Front the 9th Begin Training
Try Line 3rd Destruction and Regeneration Unknown Snow United Front the 10th Sword of Allegiance Try Line 4th Code of Conduct United Front the 11th Escape Plan Try Line 5th
Great Flower United Front the 12th Christmas Wishes Daughter of the Dusk Ace United Front the 13th OneMan Army Try Line 6th The Successor United Front the 14th
Bloom Disaster Guardians of Morden United Front the 15th Killer Scythe Try Line 7th On the Bad Road Pain of My Heart United Front the 16th Memories of Mirage Try Line 8th
Material Affection United Front the 17th Tiny Super Girl Like a Bird Ancient Code United Front the 18th Mad Assault Crew Try Line 9th The Divine Move United Front the 19th
Shinobi Hunter Task Force 1st ACE in ADVERSITY United Front the 20th Freestyle Try Line 10th Under City United Front the 21st Punk! Punk! Punk! Task Force 2nd
Mars Sweeper United Front the 22nd Scary Halloween Party Try Line 11th Task Force 3rd Four Samurai United Front the 23rd Gluttony of Disaster Task Force 4th From Me to You
Try Line 12th Return of Hope United Front the 24th Secret In My Eyes Task Force 5th The Moth Try Line 13th Beautiful Fighter United Front the 25th White Combat
Task Force 6th Silent Evolution United Front the 26th Returning Task Force 4th Jumper Try Line 14th Insanity Ahead Task Force 7th Absolute Defender United Front the 27th
Lunatic Providence Try Line 15th Blue Fire Task Force 8th All Creation United Front the 28th The Executioner Try Line 16th United Front the 29th Freedom
Guardian of the City Justice of Summer Task Force 9th If/The Beginning Portless Communication Lonely Mate Try Line 17th United Front the 30th Girls be Ambitious Task Force 10th
Halloween Forest Try Line 18th United Front the 31st Space War Task Force 11th Perfect Doctor Blue Christmas Pirate Christmas Try Line 19th 2021 New War!!
United Front the 32nd Task Force 12th Sand Rabbit Try Line 20th Because of Love United Front the 33rd Re:Merge Scrap Brain Try Line 21st Omen
Shakety Empty United Front the 34th Stray Ghost Task Force 13th One Cut Try Line 22nd Accidental Coincidence United Front the 35th Freedom Mission Task Force 14th
Burning Diamond United Front the 36th Task Force 15th Ugly Friend Try Line 23rd Road to Everlasting Summer My Beach Task Force 16th Gray Tiger United Front the 37th
Cat Alyst Search & Destroy 1st Deep Water Task Force 17th Sand Dance Trick or Treat Search & Destroy 2nd United Front the 38th My Little Forest Task Force 18th
Dark Mirror United Front the 39th Silence Snow Task Force 19th Great Fortune United Front the 40th Resurrecting the Giant Search & Destroy 3rd Brain Evolution Chocolate Race
Task Force 20th Last Ambition United Front the 41st Horrible Devil Search & Destroy 4th Easter Courage Task Force 21st United Front the 42nd Genius or Fool Search & Destroy 5th
The Red Strangers Double K Runaway Bacteria Task Force 22nd Lost Memories United Front the 43rd Runaway Blood Task Force 23rd Ominous Art Muscle Ball
Task Force 24th Flat Nose Soldier United Front the 44th Space Monster Task Force 25th Earth Dimension Fly to The Future Protective Chain Task Force 26th
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