I, uh, don't know how to pick up a key. Clicking it doesn't seem to do anything. (Nevermind, keys seem to autouse on the same screen. Could be made clearer!)
(Windows 7) Also when I died and was brought back to the title screen the window was the same size but the playable screen shrunk considerably until I hit the window size buttons a couple times. This happens in both Fullscreen and Windows mode.
Evil Roots can stick on ceilings without nearby monsters to cause their fall.
The turn indicator disappears when you switch to fullscreen.