It was a little too frustrating to get damage from the wall as well : in some case, you take damage no matter what color you are and it didn't feel well. The same when the respawning also immediatly draining your life : it's more unfair than rewarding quick reflex (even with the knowledge that you must swap, it's really too short to react) 

But the main idea of two color, tiles who drain life and the two kind of moveset (vertical vs horizontal jump) is really cool and well use ! (and the bonus way of the second stage is cool as well) 

It is a really cool game for 3h only and was fun to try ! (but I am frustrate to not be able to finish one level I think)

Challenging! I tried to speed run it as I believe its intended? It was great to try to get to the triangle friends as fast as possible while switching. Makes for a great entry!