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Boy Memories is the thirteenth Extra Ops introduced in Metal Slug Attack.


Story:

On a certain point of the world, Allen Jr. imprisoned some Peregrine Falcon recruits. While laughs as a signal of victory, Walter arrives to the location to confront him. But before that, he must defeat one of the biggest Rebel weapons: Cabrakan.

At the end, after a long battle, Walter destroy the Cabrakan, that launches a last "Gigantic Laser" just over Allen Jr., who dissapear without leaving a trace. Meanwhile, on the middle of a near desert, a very familiar Ptolemaic vehicle emerges from the bottom of the sand, with a fainted Allen Jr. behind.


Introduced Units:

Unit Rarity Available?
MSA unit Allen Jr. III-stock MSA rarity Super Rare Yes, via Rare Shop
MSA unit Cabrakan III-stock MSA rarity Super Rare No
MSA unit The Keesi III III-stock MSA rarity Super Rare No
MSA unit Walter Rian II-stock MSA rarity Rare Yes, via Medal/VIP Crank
MSA unit Formor II-stock MSA rarity Rare No
MSA unit Native (Bird) I-stock MSA rarity Normal No

Event Stage Breakdown:

Expert Units

EXPERT

UNITS
GET

UNIT
MSA event power increase MSA unit --- I-stock MSA unit --- II-stock MSA unit --- III-stock MSA unit --- IV-stock MSA unit --- V-stock
MSA unit Allen Jr. III-stockPre-

Acquisition
MSA event points increase40%MSA event points increase80% MSA event points increase120%
MSA unit Dragunov III-stockPICK UP!! MSA event points increase10%MSA event points increase20% MSA event points increase30%
MSA unit The Keesi III III-stockPICK UP!! MSA event points increase10%MSA event points increase20% MSA event points increase30%
MSA unit Walter Rian II-stockPack

Shop
MSA event points increase6% MSA event points increase9%MSA event points increase12% MSA event points increase15%
MSA unit Rootmars III-stockExtra Ops

(Previous)
MSA event points increase5%MSA event points increase10% MSA event points increase15%
MSA unit Native (Bird) I-stockReward MSA event points increase2% MSA event points increase4% MSA event points increase6%MSA event points increase8% MSA event points increase10%
MSA unit Formor II-stockReward 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
100 500,000
1,000 10
1,500 100,000
2,000 5
2,500 10
3,000 50
3,500 10
4,000 200,000
4,500 10
5,000 5
6,000 10
7,000 300,000
8,000 10
9,000 350,000
10,000 10
12,500 20
15,000 400,000
17,500 10
20,000 500,000
22,500 10
25,000 600,000
27,500 10
30,000 10
35,000 10
40,000 700,000
45,000 10
50,000 10
55,000 15
60,000 750,000
65,000 15
70,000 50
75,000 800,000
80,000 10
85,000 850,000
90,000 50
95,000 10
100,000 900,000
110,000 50
120,000 10
130,000 5
140,000 1,000,000
150,000 10
160,000 50
170,000 1,200,000
180,000 5
190,000 10
200,000 1,500,000
210,000 10
220,000 50
230,000 2,000,000
240,000 20
250,000 10
260,000 2,500,000
270,000 20
280,000 3,000,000
290,000 50
300,000 20
310,000 10
320,000 3,500,000
330,000 50
340,000 20
350,000 10
360,000 4,500,000
370,000 50
380,000 20
390,000 10
400,000 5,000,000
410,000 50
420,000 20
430,000 10
440,000 5,500,000
450,000 50
460,000 20
470,000 10
480,000 5,500,000
490,000 50
500,000 30

Mission Breakdown

Stages "Normal"

Stages / DifficultyMSA difficulty 3-Normal MSA currency Sortie Points small Enemies

Items /
Trophy of War

MSA Tied P.O.W. MSA currency Exclusive Points 1st Time
Reward
Stage 1 6 MSA item III Cabrakan Energy

MSD currency MSP 12,000

3 100
Stage 2 7 MSA item III Cabrakan Energy

MSD currency MSP 14,000

3 130
Stage 3 8 MSA item III Cabrakan Energy

MSD currency MSP 16,000

3 160
Stage 4 9 MSA item III Cabrakan Energy

MSD currency MSP 18,000

3 190
Stage 5 10 MSA item III Cabrakan Energy

MSD currency MSP 20,000

3 220
Stage 6 11 MSA item III Cabrakan Energy

MSD currency MSP 22,000

3 250
Stage 7 12 MSA item III Cabrakan Energy

MSD currency MSP 24,000

3 280
Stage 8 13 MSA item III Cabrakan Energy

MSD currency MSP 26,000

3 310
Stage 9 14 MSA item III Cabrakan Energy

MSD currency MSP 28,000

3 340
Stage 10 15 MSA item III Cabrakan Energy

MSD currency MSP 30,000

3 370

Stages "Hard"

Stages / DifficultyMSA difficulty 4-Hard MSA currency Sortie Points small Enemies

Items /
Trophy of War

MSA Tied P.O.W. MSA currency Exclusive Points 1st Time
Reward
Stage 1 16 MSA item III Cabrakan Energy

MSD currency MSP 32,000

4 400 MSA currency Medal
30
Stage 2 17 MSA item III Cabrakan Energy

MSD currency MSP 34,000

4 435 MSA currency Medal
30
Stage 3 18 MSA item III Cabrakan Energy

MSD currency MSP 36,000

4 470 MSA currency Medal
30
Stage 4 19 MSA item III Cabrakan Energy

MSD currency MSP 38,000

4 505 MSA currency Medal
30
Stage 5 20 MSA item III Cabrakan Energy

MSD currency MSP 40,000

4 540 MSA currency Medal
30
Stage 6 21 MSA item III Cabrakan Energy

MSD currency MSP 42,000

4 575 MSA currency Medal
30
Stage 7 22 MSA item III Cabrakan Energy

MSD currency MSP 44,000

4 610 MSA currency Medal
30
Stage 8 23 MSA item IV Cabrakan Pod

MSD currency MSP 46,000

4 645 MSA currency Medal
30
Stage 9 24 MSA item IV Cabrakan Pod

MSD currency MSP 48,000

4 680 MSA currency Medal
30
Stage 10 25 MSA item IV Cabrakan Pod

MSD currency MSP 50,000

4 715 MSA currency Medal
30

Stages "Hell"

Stages / DifficultyMSA difficulty 6-Hell MSA currency Sortie Points small Enemies

Items /
Trophy of War

MSA Tied P.O.W. MSA currency Exclusive Points 1st Time
Reward
Stage 1 26 MSA item III Cabrakan Energy

MSD currency MSP 52,000

5 750 MSA currency Medal
50
Stage 2 27 MSA item III Cabrakan Energy

MSD currency MSP 54,000

5 790 MSA currency Medal
50
Stage 3 28 MSA item III Cabrakan Energy

MSD currency MSP 56,000

5 830 MSA currency Medal
50
Stage 4 29 MSA item III Cabrakan Energy

MSD currency MSP 58,000

5 870 MSA currency Medal
50
Stage 5 30 MSA item III Cabrakan Energy

MSD currency MSP 60,000

5 910 MSA currency Medal
50
Stage 6 31 MSA item III Cabrakan Energy

MSD currency MSP 62,000

5 950 MSA currency Medal
50
Stage 7 32
MSAUnitPlatinum
MSAUnit R-Shobu
MSAUnitPlatinumPlate
MSAUnitLevel4
MSAUnitLevel2