Options:

F1 - Inf.Health
F2 - Inf.Grenades
F3 - Mega Command Points
F4 - Inf.Airstrikes - Inf.Bazooka

Notice:

First start game world get hit once then activate health cheat
First throw a grenade then activate grenades cheat
First use airstrike or bazooka once then activate cheat
First pick up command point once then activate cheat