Loved everything about this platformer, the movement is smooth and the ghost mode was fun, though a little op. I had a bug that resulted in one of the buzzsaws just occupying a single column, requiring me to use the power to get through (only realized it was a bug cause on my second playthrough it was in a different spot), but it made me wish that it had been intentional. Forcing the player to get through a segment within their ghost time limit sounds pretty fun (as long as there is a checkpoint before it lol).
Leaderboard and achievements were a nice addition, however the scores stack with each run, meaning the top of the leaderboard will just be whoever grinds that one level with the coin pit. Similar logic must be used for the deaths, because on my second run I had gone for 0 deaths and didn't get the achievement.
Overall, lots of fun!