I finished this game a couple of weeks ago, and, admittedly, I did need the walk through for a couple of spots, but only after spending two or three days on the parts I got stuck on and not being able to figure out how to move on.
There was one bug (keeping the wet suit on when walking through the locked door in the laser area caused the game to freeze) that I messaged the developer about, and he was fast getting back to me .
I found the whole game to go a good job of keeping me on my toes, and I really enjoyed how it didn't get stale because the type of game it was would get changed up now and then. The changes to game play were a creative touch. Both the story and game design clearly had a lot of thought put behind them too.
Thanks!