Overall a very cool game but the way some things have been implemented leaves me wanting for something better. The way each area has it's own style of puzzles is nice but they could have been done so much better.
Other more minor issues are no diagonal sliding across walls(ie go upleft against a | wall and you just stop instead of going just up), fake "items" you can't tell if you can loot an item until you mouseover it, all enemies respawning on changing floors is kind of tedious and makes it easy to accidentally become overleveled though there's some scaling so it isn't a big deal but loot scaling based just on your level means that you should kill all enemies before looting any chests.