A good little attempt at a platformer, visuals were decent and audio added to the overall user experience. Effort was clearly made towards the non-gameplay polish part of the game, which is entirely fair when a game's mechanics can be fairly basic. Submission was easy to access, with the exception of a lot of .dll files, but that isn't a major problem.
The key issue is regarding the character jumping, which appears to be tied to framerate. Through some magical tweaking (e.g Vsync) I was able to play the game properly. Did you use Delta Time in any way, or was all the physics updated every frame? Was the engine you chose the most appropriate for physics-based jumping? In addition, the rest of the game felt a bit empty at times, giving the player a clear goal or progression is a significant part of retaining player engagement.
In summation, this is a decent submission with some oversights that did spoil it somewhat. Some more attention to the gameplay would go a long way for this submission, but great effort nonetheless.