I saw your comment about some of the jumps not being possible, was the jump from day to night where the icy looking blocks were one, I just could never seem to get high enough to get up there. Were you trying to go for like one of those rage jumper games? if so, I think you're on the right track, but if not, I would consider adding in checkpoints that you can respawn at if you fall far enough, bc its really frustrating to get knocked off by a bat and them end up blocking the path so you have to shoot them until they die. But I think you did really a really nice job over all.