Gundam Battle Assault 1

XXXG-01W WING GUNDAM

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Beam Rifle - (G/A) ↓↘→ + P 

Beam Saber - (G) →↘↓↙← + P Hyper Dash - (G) ↓↘→ + K 

Rise Down Kick - (G/A) ↓↙← + K 

Bird Mode Attack - (G) ↓↘→↓↘→ + P

MSZ-006 Z-GUNDAM

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Beam Rifle - (G/A) ↓↘→ + P 

Beam Saber - (G) →↘↓↙← + P Hyper Dash - (G) ↓↘→ + K 

Rise Down Kick - (G/A) ↓↙← + K 

Wave Rider Attack - (G) ↓↘→↓↘→ + P 

MS-06F ZAKU II (F-Class)

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Zaku Machine Gun - (G/A) ↓↘→ + P 

Heat Hawk - (G) →↘↓↙← + P 

Cracker - (G/A) ↓↙← + P 

Rising Tackle - (G/A) ↓↘→ + K 

Cracker Special - (G) ↓↘→↓↘→ + P 

MSN-02 ZEONG 

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Hand Beam - (G/A) ↓↘→ + P 

Hand Knife - (G) →↘↓↙← + P 

Punch Rush - (G/A) ↓↙← + P 

Psychomu Attack - (G) ↓↘→↓↘→ + P 

MSN-04 SAZABI

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Beam Shot Rifle - (G/A) ↓↘→ + P 

Beam Axe - (G) →↘↓↙← + P 

Spin Kick - (G/A) ↓↙← + K 

Funnel Launch - (G/A) ←↙↓↘→ + P 

Funnel Attack - (G/A) ↓↘→ + P (After launching Funnels) 

Beam Shot Flash - (G/A) ↓↘→↓↘→ + P 

NZ-000 QUIN MANTHA

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Beam Launcher - (G/A) ↓↘→ + P 

Hyper Beam Saber - (G) →↘↓↙← + P 

Beam Shower Attack - (G/A) ↓↙← + P 

Funnel Launch - (G/A) ←↙↓↘→ + P 

Funnel Attack - (G/A) ↓↘→ + P (After launching Funnels) 

Mega Beam Cannon - (G) ↓↘→↓↘→ + P 

MSZ-010 ZZ-GUNDAM 

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Double Beam Rifle - (G/A) ↓↘→ + P 

Mega Beam Saber - (G) →↘↓↙← + P 

Knee-Lift Shot - (G) ↓↘→ + K 

Spray Missile - (G) ↓↙← + P 

Hyper Mega Particle Cannon - (G) ↓↘→↓↘→ + P 

MSM-03C HY-GOGG

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Machine Gun - (G/A) ↓↘→ + P 

Hand Burner - (G) →↘↓↙← + P 

Homing Missile - (G/A) ↓↙← + P 

Jumping Tackle - (G/A) ↓↘→ + K 

Hell Burner Rush - (G) ↓↘→↓↘→ + P 

PMX-003 THE-O 

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Beam Rifle - (G/A) ↓↘→ + P 

Beam Sword - (G) →↘↓↙← + P 

Hidden Arm Sword Rush - (G/A) ↓↙← + P 

Slap Tackle - (G/A) ↓↘→ + K 

Beam Sword Dance - (G) ↓↘→↓↘→ + P (then press any normal P or K button to attack) 

RX-78GP02A "GUNDAM PHYSALLIS"

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Hyper Bazooka - (G/A) ↓↘→ + P 

Beam Saber - (G) →↘↓↙← + P 

Shot Bazooka - (G) ↓↙← + P 

Shield Buster - (G) ↓↘→ + K 

Atomic Bazooka - (G) ↓↘→↓↘→ + P 

MSM-04 ACGUY

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Acguy Machine Gun - (G/A) ↓↘→ + P 

Acguy Drill Claw - (G) →↘↓↙← + P 

Acguy Jump Upper - (G) →↓↘→ + P 

Acguy Claw Rush - (G) ↓↙← + P 

Acguy Rolling Maximum - (G) ↓↘→↓↘→ + P 

AMX-004 QUBELEY

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Beam Gun - (G/A) ↓↘→ + P 

Beam Saber - (G) →↘↓↙← + P 

Double Kick - (G) ↓↘→ + K 

Somersault - (A) ↓↘→ + K 

Homing Kick - (G/A) ↓↙← + K 

Funnel Launch - (G/A) ←↙↓↘→ + P 

Funnel Attack - (G/A) ↓↘→ + P (After launching Funnels) 

Full Funnel Attack - (G/A) ↓↘→↓↘→ + P 

AMX-103 HAMMA-HAMMA

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Triple Beam Shot - (G/A) ↓↘→ + P 

Beam Saber - (G) →↘↓↙← + P 

Leap Attack - (G/A) ↓↙← + K 

Hide Bomb - (G/A) ↓↙← + P 

Plasma Beam Cannon - (G/A) ↓↘→↓↘→ + P 

MA-08 BIG ZAM

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Homing Missile - (G/A) ↓↘→ + P 

Mega Particle Cannon - (G) ↓↘→↓↘→ + P 

AMA-X2 NEUE ZIEL

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Wire Arm Laser - (A) ↓↘→ + P 

Wire Arm Saber - (A) →↘↓↙← + P 

Homing Missiles - (A) ↓↙← + P 

Heavy Tackle - (A) ↓↘→ + K 

Mega Cannon - (A) →↓↘→D + P 

MRX-011 PSYCHO GUNDAM Mk III

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Shoulder Cannon - (G/A) ↓↘→ + P 

Large Beam Sword - (G) →↘↓↙← + P 

Psycho Blast Upper - (G) →↓↘→ + P 

Scattering Mega Particle Cannon - (G) ↓↘→↓↘→ + P 

OZ-15AGX HYDRA GUNDAM

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Buster Cannon - (G/A) ↓↘→ + P 

Beam Saber - (G) →↘↓↙← + P 

Shoulder Claw Beam Cannon - (G) ↓↙← + P 

Hydra Waltz - (G) ↓↘→↓↘→ + P 

RX-78 GUNDAM

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Beam Rifle - (G/A) ↓↘→ + P 

Beam Saber - (G) →↘↓↙← + P 

Cyber Shield - (G/A) →↓↘→ + P 

RX-93 U-GUNDAM

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Beam Rifle - (G/A) ↓↘→ + P 

Beam Saber - (G) →↘↓↙← + P 

Jumping Knee Tackle - (G/A) ↓↘→ + K 

Fin Funnel Launch - (G/A) ←↙↓↘→ + P 

Fin Funnel Attack - (G/A) ↓↘→ + P (After launching Fin Funnels) 

RB-79 BALL

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180mm Cannon - (G/A) ↓↘→ + P 

Mining Drill - (G/A) ↓↙← + P 

Rotating Cannon Attack - (G/A) ↓↙← + K 

MS-06S CHAR'S ZAKU II-S

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Zaku Machine Gun - (G/A) ↓↘→ + P 

Heat Hawk - (G) →↘↓↙← + P 

Cracker - (G/A) ↓↙← + P 

Rising Tackle - (G/A) ↓↘→ + K 

Cracker Special - (G) ↓↘→↓↘→ + P 

Play as MA-08 Bygzam:
Complete story mode under the easy difficulty level. 

Play as AMX-002 Neue-Ziel:
Complete story mode under the normal difficulty level. 

Play as Psycho Gundam Mk III:
Complete story mode under the hard difficulty level. 

Play as 0Z-15 AGX Hydra Gundam:
Complete story mode under the hard difficulty level without continuing.

Play as RX-78-2 Gundam:
Complete story mode under any difficulty level then complete story mode again as any Gundam except Z-Gundam and Ac Guy.

Play as Gundam:
Complete story mode with the GP02A after defeating Gundam.

Play as New Gundam:
Complete story mode with the Zaku II after defeating New Gundam.

Play as Ball:
Complete the game with all twelve mobile suits under any difficulty setting.

Play as V-Gundam:
Complete the game as Aguie under the hard difficulty setting.

Play as Char's Zaku II:
Press Left, Up, Right, Down, Square, Triangle, Circle at the mode selection. A sound will confirm correct code entry. Select versus mode, then keep pressing Right at the Gundam selection screen. This Gundam is by far the fastest, and is very good at combos. The differences are that it is a dark maroon-like color and has a small crest above its head. Note: Press L1(4), R1(4), L1, R1, L1, R1, L1, R1, L1, R1 at the mode selection screen in the Japanese version of the game.

Alternate colors:
Press Start + X at the versus mode screen.

Unlock all Boss mobile suits:
To unlock all of the Boss mobile suits at once, successfully complete the game under the hard difficulty setting without using any continues.

출처 : http://www.gamewinners.com/playstation/GundamBattleMaster2.htm

Gundam Battle Assault I (PSone): All Character Ultimate Attack Part 1