We have posted the controls here on the information box (You can see them also in the options menu inside the game). If you press "E" the character will perform a windstrike, and you will be able to open doors, activate switches and solve puzzles. Tip: when you perform an omnidash, you are also performing a windstrike on the opposite direction of the player movement. If in the future you need to glide, use W ;)
Thanks for playing!