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Alien vs Morden is the 13th Extra Ops introduced in Metal Slug Attack, and the third with Accumulative Ranking.


Story

Morden, along with their soldiers and Mars People (Normal, Cadre and Elite) are preparing an assault to the Invaders, who are brainwashing and restoring Rootmars. Meanwhile, on the space, the Invaders awaken Rootmars to attack.

At the end, Morden and Rootmars are face-to-face with some Invaders U.F.O., which are surprisingly destroyed by Rootmars, who recovered it memory in front of a laughing Morden.


Introduced Units

Unit Rarity Available?
MSA rarity Super Rare Yes, via Rare Shop
MSA rarity Super Rare Yes, via Rare Shop
MSA rarity Super Rare Yes, via Another Story
MSA rarity Rare Yes, via P.O.W. Shop
MSA rarity Rare No
MSA rarity Normal No

Event Stage Breakdown

Expert Units

EXPERT

UNITS
GET

UNIT
MSA event power increase
Pre-

Acquisition
MSA event progress increase+2
MSA event points increase40%
MSA event progress increase+4
MSA event points increase80%
MSA event progress increase+6
MSA event points increase120%
VIP CRANK MSA event progress increase+2
MSA event points increase40%
MSA event progress increase+4
MSA event points increase80%
MSA event progress increase+6
MSA event points increase120%
Pack

Shop
MSA event progress increase+1
MSA event points increase10%
MSA event progress increase+2
MSA event points increase20%
MSA event progress increase+3
MSA event points increase30%
MSA event progress increase+4
MSA event points increase40%
Extra Ops

(Previous)
MSA event points increase10%MSA event points increase15% MSA event points increase20%
Reward MSA event points increase6% MSA event points increase9%MSA event points increase12% MSA event points increase15%
RewardMSA event points increase2% MSA event points increase4% MSA event points increase6%MSA event points increase8% MSA event points increase10%

Milestones

MSA currency Exclusive Points MSA currency MSP MSA currency Medal
1,000 100,000
5,000100,000
10,000 100,000
15,000 100,000
20,000 100,000
25,000 100,000
30,000 10
35,000 100,000
40,000 100,000
45,000 100,000
50,000 10
55,000 300,000
60,000 300,000
65,000 300,000
70,000 300,000
75,000 10
80,000 300,000
85,000300,000
90,000 300,000
95,000300,000
100,000 10
105,000 500,000
110,000 500,000
115,000500,000
120,000 500,000
125,000 10
130,000 500,000
135,000 500,000
140,000500,000
145,000 500,000
150,000 10
155,000 750,000
160,000750,000
165,000 750,000
170,000 750,000
175,000 10
180,000750,000
185,000 750,000
190,000 750,000
195,000 750,000
200,000 10
210,000 1,000,000
220,000 1,000,000
230,000 1,000,000
240,000 1,000,000
250,000
260,000 1,000,000
270,000 1,000,000
280,000 1,000,000
290,000 1,000,000
300,000
310,000 1,000,000
320,000 1,000,000
330,000 1,000,000
340,000 1,000,000
350,000
360,000 1,000,000
370,000 1,000,000
380,000 1,000,000
390,000 1,000,000
400,000
410,000 1,000,000
420,000 1,000,000
430,000 1,000,000
440,000 1,000,000
450,000
460,000 1,000,000
470,000 1,000,000
480,000 1,000,000
490,000 1,000,000
500,000
Rank Reward (parts) Reward (Event Items)
1-3 Diamond/Platinum MSA item III Ring Energyx4MSA item IV Chainx2MSA item V Cranex2MSA item V Metal Slug Hatchx2
4-6 Diamond/Platinum MSA item III Ring Energyx4MSA item IV Chainx2MSA item V Cranex2MSA item V Metal Slug Hatchx1
7-10 Diamond/Platinum MSA item III Ring Energyx4MSA item IV Chainx2MSA item V Cranex2
11-20 Gold MSA item III Ring Energyx4MSA item IV Chainx2MSA item V Cranex2
21-40 Gold MSA item III Ring Energyx4MSA item IV Chainx2MSA item V Cranex1
41-100 Gold MSA item III Ring Energyx4MSA item IV Chainx2
101-200 Silver MSA item III Ring Energyx4MSA item IV Chainx2
201-300 Silver MSA item III Ring Energyx4MSA item IV Chainx1
301-500 Silver MSA item III Ring Energyx4
501-750 Silver MSA item III Ring Energyx2
751-1000 Silver
1001-2000 MSA currency MSP
500,000
2001-5000 MSA currency MSP
100,000

Mission Breakdown

Stage Enemies Reward
Stage MSA item III Apple (Invader)MSA item IV Banana (Invader)
BOSS STAGE RootmarsSprite

Event Items

 UFO Invader
Icon Name Stat Effects Components
MSA item III Apple (Invader) Apple
(Invader)

HP +100
[Special] Attack Damage +5

x1: MSA item II Rocket Launcher MSA item I Armor Piercer x2: MSA item I Canned Food

MSA item IV Banana (Invader) Banana
(Invader)

HP +150
[Special] Attack Damage +10

x5: MSA item III Drop Shot MSA item II Teddy Bear MSA item III Apple (Invader)

MSA item V Chinese Cabbage (Invader) Chinese
Cabbage
(Invader)

HP +200
[Special] Attack Damage +20

x25: MSA item III Super Grenade x15: MSA item III Apple (Invader) x5: MSA item IV Banana (Invader)

MSA item V Carrot (Invader) Carrot
(Invader)

HP +250
[Special] Attack Damage +30

x1: MSA item V Battery MSA item V Arabian Tears x15: MSA item V Chinese Cabbage (Invader)

 Rootmars
Icon Name Stat Effects Components
MSA item III Ring Energy Ring
Energy

[Far][Special] Attack Damage +10

x1: MSA item II Shotgun MSA item I Battery x2: MSA item I Bomb

MSA item IV Chain Chain

[Far][Special] Attack Damage +20

x5: MSA item III Iron Lizard MSA item II Watermelon MSA item III Ring Energy

MSA item V Crane Crane

[Far][Special] Attack Damage +40

x25: MSA item III Enemy Chaser x15: MSA item III Ring Energy x5: MSA item IV Chain

MSA item V Metal Slug Hatch Metal
Slug
Hatch

[Far][Special] Attack Damage +60

x1: MSA item V Holy Water MSA item V Emblem (Blue) x15: MSA item V Crane

Metal Slug Attack Extra Ops
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

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