(This is for Gamecube and PS2 and Xbox)
Easy Platinum on
Amateur League-
Too Hot To Handle-
Monkey Immolation

(3mins on virus to get Platinum)
Don't run around the corridors because the computer can come up behind you instead go outside to where there are 3 huts (1 with a ladder, 1 normal and 1 bust up - no roof) and go up the ladder and turn around and if the sodding monkeys come up then jump off and go back up the ladder and repeat when nesscary. When you are doing this shooting the buggars helps.

posted by vinnybcfc

(This is for Gamecube and PS2 and Xbox)
Easy Platinum on

Amateur League-
Too Hot To Handle-
Disco Inferno

(3mins on virus to get Platinum)
In the Nightclub there are some stairs outside go and find the bit where there is a gap in the walkway above a max damage (looks like a spiky ball). Then make sure you are on the side with the Tommy Gun x2 and then shoot the computer as they come up.