The intro scene was well put together, it took me a while to master the controls, but after that it felt fine, maybe the dark levels could use a background, Some sound effects and music could do a lot to improve the game, I was surprised to see the level gain color all of the sudden, that was nice, I also tried to speedrun it and ignore enemies, which sometimes works, the level design could improve a bit, but for only 3 days this was put together quite well, good job! I ended up here and didn't know where to go :)