Gladiator+~30-40 int+Adrenaline+Ice set (Sword>Lance>Bow) = unstoppable. Really, it's ridiculous, the ice shards just kill everything. And anything that's bugging you gets frozen. Even bosses. Way too easy u.u
Finally got hard badge. Anyway, for those having trouble in level 19, in the upper section you can find a spot where the walls don't touch you. Use the line as a point of reference and try to find it; don't hover too up, I actually found it easier buy staying as close to the lower wall as possible, instead of being close to the ceiling. Cheers, if you don't nail it after a while try again tomorrow :)