I love the mechanic and level design of your game. However, there are some issues I want to point out to make your game better. First, I think your dash is to dash from the direction the character are looking at, but in some situation the direction the character are looking at is opposite with my arrow key, so it dash to a different way, it is kind of like a bug. Second, I think it is good to only keep moving character controlled by arrow key, or change the jumping and dashing into other keys, cause it is difficult to press "wasd" while pressing "z" and "c". Third, it will be better to add some bgm or something, also when the game end, you can change to a game end scene instead of back to beginning. Anyway, your game is still good and fun to play, these are just some suggestions to improve it more, don't be sad about my comments, but continue working and improving the game and make more games!
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thank you very much for your comment I really appreciate it, it helps me to get better.
After I end the game and play test it and i notice dash problem, I will fix it but after one week (I have midterm).
For control button I take inspired from hollow knight so I made it as you use arrow keys and" Z","C" but in my next game I will make optional control.
thank you again for your awesome comment.