well i'm a monk and how i did it was to remove ALL my healing spells...all i had was a health regen buff
i also removed my wand and equipped a melee weapon i was not qualified to use.
took me about 3 attempts to figure out which skills to eliminate.
warrior specific tips? i don't really have any other than find your classes weakness...monks are vulnerable to melee attacks if you remove their ability to heal...which is all i did.
idk what warriors are vulnerable to, but their strngth is in their armor...so maybe remove healing abilities and armor? idk, just trying to be helpful.