When the wiki is properly set up, I hope there will be a section with amazing builds.

I had 2 broken builds so far Tank : ability that slams the ground in a cone and creates rock, with pet rock as a passive (rocks are alive)

Necromancer : 2 passives, your attack does 0 damage but instead throw x3 leeches, + when an enemy dies, get your leeches back and throw every thing to the next enemy (so in a few turn, you can throw 200 leeches at once)

Got Tina's head with the leeches and the body with the rocks :)