I'm mixed on WotL. On one hand, it adds a crap ton of mechanics to the game that make it new and fresh. On the other hand, it has a cheap, fucking obnoxious difficulty spike. For one, there are new floors. The Cellar, Catacombs, and Necroplis. The latter two are fine; it's the fucking cellar. The Cellar is one of the worst designed areas I've ever seen with extremely annoying enemies to boot. Seriously, who thought spiders were a fun enemy? Second, the new bosses are terrible. Any boss that either A: Summons monsters or B: has a shield around their weakness is a bitch of a time. Looking at you, Mask of Infamy! Also, Isaac (the fight) is a cheap HP drainer that made me debate whether I should continue playing Isaac. Oh, and curses. I love getting punished for doing literally nothing wrong! Overall, I couldn't get down with WotL. It's too frustrating and unfun BS to me. It has good things in it, but man. Fuck that difficulty.