I was planning on having the different abilities help you in combat (enemies that were weak to the ice beam/could be turned into frozen platforms or enemies that were weak to explosives) and exploration (walls that could be blown away). Really has me wanting to make a "real" metroidvania or a bigger version of this, although the concept of "losing abilities" can be inherently unsatisfying :P we'll just have to see lol. Also you have very good art!!