I beat the game on easy with 130 deaths.
A lot of things changed from the last version I played, I appreciate the progress. The keys now make more sense on the keyboard and it is great that the run key doesnt exist anymore. Easy mode makes the game beatable since it gives time to try again difficult levels without being oppressed by the timer. The new animations pours even more life in the character and the design in the first few levels is a lot more fun.
The movement could use some work like the rest of the people suggested. One thing that annoyed me was that pressing down would stop the protagonist dead. I expected to slide a little like in most platformers. When on ice, if you press down and then the key contrary to your movement the character will also stop.
The difficulty sky rockets really quickly, but I assume that with the full game the difficulty curve will not be so abrupt. Switches not turning off when the player dies allow them to cheat in some cases. Also consider making switches not count down if the player is on top of it.
There are bugs with the collision. Sometimes I was able to stand without moving on spikes or on top of the top drop in the second level.
I like that you have been advancing with your game. Keep going!