This is the farthest I've seen anyone make it. I have a "perfect" cleaver build. Somehow found 3 chefs hats and was able to beat the end boss a second time.
1 use the wand to add 2-3 energy for the subsequent turns
2 start building weekness using the dark wetstone
3 use the broken ring if additional shield is needed
4 mirror shield with +2 haste lets me build up armor super quickly. also stacks spikes due to relic
5 because of shield spirit relic, it also activates all of the cleavers.
6 stack rage since the gold cleaver has +2 rage on it and due to belt of knives, the middle king cleaver gets over 200 damage by the last use.