Hi Joshua!!
Congrats on making an amazing game in 3 days!!
This game was super fun for me to play and review.... reminded me of the old days when i used to play hack and slash games on school computers in math class with my friends while the teacher was teaching!! You should make this a commercial game Joshua, the animations where on point, I loved the lever mechanic and I honestly can't believe you made this in just 3 days. The game is so well rounded and complete! I only wish it had more levels as I finished them pretty quickly. Expanding this in the future you could add more mechanics like the lever, sliding and crouching, and a level editor! I would love that you have to kill all the enemy's before the illuminated cube lights up and you can move on to the next level.  Maybe add a leader-board for times and make this a speed run game? I found myself personally trying many times to run and slash through the enemy's as fast as I could. Honestly, this game is extremely well rounded so congrats on your game and keep on developing!! ps. you could add bows and a shop xD. This game has a lot of potential Joshua, I loved it. Let me know about any updated you do and also be on a lookout for a video by me about this game, I loved it!! :)