Okay, here's my feedback on your guys game:
- The art and music are great and help create a good atmosphere.
- The jumping is buggy on controller (used PS4 controller).
- The time before the level restarts is too long.
- There's no quick restart button (R key).
- In the hub world the first three levels are in the door that is the furthest to the right. Why do you sort them from the right to the left and not from the left to the right?
- The third level of the first door was difficult with the chest (jump up and then go below it).
- The first level of the second door is very difficult. However, the second level of the second door is just too difficult (with the jump on top of chest for a jump boost). Also the chest often gets stuck at the door as it's jumping up and down.
- I tried the other levels from the other doors as well, to see what their difficulty was like. Overall I would say that the first three levels of the game are alright, but after that the difficulty is pretty much a straight line going up at a 90 degree angle to infinity ;-).