Personally speaking, the content that I'm looking forward to the most, the content I enjoy the most, is Deep Dungeon. When this achievement came out, I was super excited to try it.

Then I realized it was juuuuust about impossible to get this achievement. I can't claim to be as good at Deep Dungeon as the OP, but most of the time, the people who play the game are the ones more familiar with it. It seems to me SE thought, "Hey, lets just put this achievement in here. Oh, we should add some sustain potions. Yeah this is fine!" Did anyone at SE try to get to 200, to make sure it could be done? It should be possible, but it seems like some finer tuning is needed.