Options:

F1 - Active Trainer 
F2 - Inf. Health
F3 - Inf. Mana
F4 - Inf. Lifelines
F5 - Invisible
F6 - Inf. Skill Points
F7 - Instant Skill Cooldown
F8 - Mega Exp

Notice:

First start game world then activate the trainer.
First open skills window then activate skill points cheat.
First use a skill once then use the instant cooldown cheat.