Unpack / overwrite file into your game directory, run trainer then run game as usual.
On the GameMode Mini-Camps select screen use the following key to activate unlocker cheat:
F5 – Unlock Mini-Camps
Carmageddon TDR 2000: Cheats, Codes and Commands Commands: Version Display...
ENEMY INFESTATION: CODES During The Game (Not On The Pause), Enter Any Code a...
Star Rangers: Codes To Activate The Encoding, Type Java:BOGONS - SHOWS STAR R...
PAC-MAN WORLD RALY: CODES Black Bomb.Eat Five Blue Ghosts in Pac-Mobile Mode ...
Diamond Sword, Wooden Sword: Codes Press The Button (~) and Enter Commands, T...
Serious SAM HD: The Second Encounter: Codes 1) During The Game, Press The [~]...