Thanks for the feedback!
About the the map, it's actually a lot smaller than it should've been since I wasn't able to finish all the area, and because of that I didn't make a mapping system for it yet, although I will add it later, and I will of course add more personality to the rooms, I just didn't have enough time.
I did notice that the movement is a bit too fast, so I reduced the player speed a bit and gave the player more air time, I also reduced the dash length without it affecting the overall level design.
All of the gates guard an item behind them, however since (as I said before) the game isn't done, I had to block some of the areas but I kept the doors at that place, I will make sure to make the doors more memorable.
Stay tuned for the 2 areas that I will be adding soon, along with bosses, more collectibles, more polish and maybe some NPCs :)