For a platformer the controls have to be on point. This was for the most time the case, the only change I'd like to see is the interaction with the grappling birds. Right now you are pulled toward the bird and make a jump when reaching him. How about instead of losing all horizontal momentum you can stop pressing space earlier and you keep all your speed and momentum and even gain a bit from being pulled in that direction. When holding space the current interaction with the jump is then used. What do you think about this change?
The atmosphere war great too, and I enjoyed the writing of the interactions between D and the NPCs. The end dialog came a bit to sudden for me. The NPCs talked about completing my goal but I never really knew what that was except to get to the top, a bit more information would have been nice on that part.
The upgrades didn't really worked for me, but maybe that was my error.
Great entry to the Jam