Bugs and glitches
Aside from being faster and harder than the original from the very beginning (as in Mode B), there's a jumping glitch that's not very pleasant. One time when I jumped, I fell on the left corner of the room, from the top, and another time I actually fell under the lowest platform, somehow, but the player got teleported back up. Jumping in the original wasn't that massive and with that much force to kick the player from the top center to the bottom left of the level, so that's kind of a pain in the ass. I always enjoy remaking classics and making them harder as well but you have to stay true to the gameplay, otherwise things like that are going to happen. Other than that minor bug and the fact the controls don't actually fell like the original, the game was very well programmed, looked and sounded like the original, and as the original - addictive and challenging. Not to mention the medals which are always a win. So great work, but you have to try and fix those Neo-in-the-Matrix jumps.