Fun little game you made here. I think the best part of it is by far the movement. Climbing ladders in particular was very satisfying and I'm glad you added an upgrade that turned the whole game into a ladder.
The lack of sound is a bummer because it could have elevated this game so much.
The artwork is great and the whole game is looks very cohesive. I like the dithering when changing area.
There was one part where I thought I was softlocked, but I managed to escape with spamming the jump button. Aside from that the game felt very polished.