Execution is a bit sloppy, but your level of attention shows through regardless. this game is not one to be idly undertaken as it is "old school hard" as they say. FYI I have a 3rd party controller and after some fiddling the game recognized it just fine, though the mapping was a bit odd. (still very playable however!) The game was a bit laggy but frame rate was at least smooth, so I'll over look it, especially since I'm playing on a potato. Obvious comparison is Obvious so i wont make it. Mood is set well, but your initial level design is a bit harsh on the learning curve. Mounting ropes is hit or miss, and shouldn't be. Further, object detection is a bit to narrow all around, which is odd when you considder how loosey-goosey you were with clipping, (not that yours was particularly bad mind you).
This game is a SOLID 4/4 and something to be proud of. We look forward to many more quality games from you in the future! :D