Woooow that was haaaaaaaaard.
The level design on most of the levels is genius. I think there is not much more that I can say, the LD work on this is seriously awesome.
That being said the game is super difficult, I finished it with 151 deaths (half of them probably on last 2 levels). I would really appriciate some sort of checkpoint system, especially on Flag Friends level.
I really liked the change in music for the, let's say "boss level".
Good game, great LD work, simple graphics and really high difficulty.
Good luck during this and any future jams!