Hello thanks for your feedback !
I preferred to use the arrows for the movements so i dont have to handle all keyboard layouts, since the game does not need the mouse to be played it was ok for me. But i still understand that using WASD is better and i will try to give the choice to the player next time.
For the dash you can use it while jumping and pressing the Up button you just need to press Left or Right at the same time. But yeah, i think it would have been better if i directly dash to the last direction the player moved.
Anyway i'm glad you still enjoyed the game Thanks !