Game the easiest by abusing Mechanics? Mage.
Int reduces Cooldown ( i assume Warrior Cooldowns too ).
-> Invisibility has 1 Round Cooldown.
with Lonewolf + Class Cannon + 7 Speed ( 5 + 2 Equipment ) -> 18 Ap per Round
- 6 Ap for Invisibility
I can cast 2 Spells and cast Invisibility.
Enemies cant do anything against it -> win.

But same can be achieved by Rogue:
Invisibility ( long CD ) -> go into Stealth somewhere where Enemies cant see you.
Wait for Invisibility to be Ready again -> go in -> Invisibility and repeat.