I really like the game and I think it could be awesome IF some things were fixed. I've been playing the demo before buying it and I've found a bug (I don't think this is intended) that seems to trigger after you save a game and load. The enemies not only respawn, but also multiply. Say there are 2 pigmen, 2 dolls and 3 small enemies with an eye. Well, once you load there are 4 pigmen, 4 dolls and 6 small enemies, this is a waste of ammo, HP and time, because it's unfair imo. Is this intended or is it a bug? Another problem I've had is that when I loaded the game after saving I had very low fps and everything was working perfectly before that, maybe it's a result of the enemies multiplying who knows. I wish this was fixed because right now it's the only thing that discourages me about buying the game. Appart from that and some minor things like a plant hitting a puzzle piece and clipping through the ceiling I'm really enjoying the game.
EDIT: I just found out you can activate invincibility in the menu, so I think I'll just do that whenever I load a save and have to deal with multiple enemies. I'll give the game a try because it really is awesome :).