Thanks for the feedback.
I had the main inspiration (Tapper) way too fresh in my mind, so it absolutely didn't occur to me to ask the question "what to do" ? ^^'
I didn't make other people test it before posting, but that's what feedbacks are for !
For the font I used Itch.io 's, a quick search lead me to the 04b-03 font (similar, but not the same). I hope it can help you !
I scrapped mechanics/level variety due to not optimal project/time management on my end... ^^' But they were in the original plans !
And finally I went solo just to prove to myself that I could make a game from (pretty much) scrap.
I learned a lot !