I played till the room with the decaying lava bridge (the one where you have to walk from left to right and where there is a chain trap) and then rage-quit (thanks for the automatic savepoints!).
1. The whole level is frustrating for players as can't guess which floor tiles are decaying and which ones not as they have exactly the same texture. Most game designers preach to avoid such situations, where the game seems to punish randomly without giving any clues.
2. IMO said room was extremely hard compared to all the rest. In contrast to other rooms I tried this one hundreds of times and never managed to get to the end of it (probably that's also because the game is slightly lagging for my PC there). I would prefer if the room would be split into 2 rooms at least.
I guess I'll try to script the controls for the room in AutoHotkey later on...
Apart from that I can hardly complain. It's a solid Zelda-like game with great music, graphics, story and design.