Fighting Force 2

On fighting force 2 pick 1 player mode then choose Hawk. 

On the first level press R2, up, and then press R1 if u do it correctly a weapon mode screen will show up and it will allow u to pick any weapon u want it's good to use on bosses sometimes it won't work the 1st time so don't get mad you'll get it.

God Mode:
At the "Press Start" screen, hold L1 + L2 + R1 + Triangle + X + Left.
Now start a game and choose a level to be invincible and have unlimited ammo. This will also disable the ability to save your game.

Level Select:
At the "Press Start" screen, hold L2 + R2 + Circle + Triangle + Up. Now
start a game and choose a level.