I was very confused starting off, didn't know what I was doing or what things meant onscreen. I also don't know if there was a web-exclusive bug when taking damage, because all I saw was a black screen. I think saw the potential of what you were getting at, though, and I think with a little more polish and some audio it'll be a world of a difference! Keep at it! :D

It's hard to tell what's going on, I was totally lost at first. At some point I noticed the three tiles you had pointed out in the icon and I figured out that they are the tiles that damage you. Once I figured that out, I was able to enjoy it. However, occasionally there were times when there wasn't a possible path I could take without taking damage.

The two primary things this game needs is a brief explanation screen and a system to make sure that a path is always possible.