As already mentioned, this game was inspired by the old game "Heart of Darkness". It seems to be similar to "Out of this world" (same game author) and "Prince of Persia" as some have mentioned in the judgement comments. So from the comments I think I got the game feeling right. What didn't go so well is my testing. Besides the already...
Given the 20th Anniversary edition, I wanted to do something a little more ambitious than what I usually do, and I took a couple of days off work just to work on this. While I didn't actually finish polishing the game that way I wanted -- you might have noticed some missing animations, e.g. glass breaking...