Aside from the graphics there isn't very much depth to this game and for 20$ thats pretty disappointing. The game play is basically just backtracking over a dark map to find/use items. If you die you have to start over and grab all the items, back track, and avoid monsters as you go. This premise is being done by so many indie horror devs because its easy and doesnt require making interesting stories, complex enemies, or fun game play

Im not sure where the puzzles are, from what I can tell you just have to find an item and use it at the obvious place. Hand for the hand scanner. Key for the doors. All the containers you need to find are labeled and match the keys you find so im not sure how any of those are puzzles.

The flash light is incredibly weird. It doesn't follow your cross-hair but instead kinda flies all over the place and your batteries run out every few minutes. The gas mask runs out very quickly and you get frozen in place while you are trying to change the filter. Movement is terrible. If you run you can only sprint for a few seconds before you are out of breath and running drains your gas mask quicker. Walking is painfully slow so most of the time you'll run for a bit, change your filter, run, change filter, run, change filter. I cant understand the point of even having batteries or filters since you find them laying everywhere so you are never at risk of running out. Just something to slow down the game play and give false urgency.