welp i'm the first playtester here despite i'm a 7 digit and still learning 3* maps. but i have taste based on design aesthetic and gameplay (i'll be heavily focused on gameplay) this is totally my own opinion, please don't bash me.
--
non weeb so far it's really amazing on design perspective, gameplay i think it's ok.
i'm a type of person that don't really like bright and sharp colour, the slider circle are pretty bright to handle and it's pretty distracting for me but i can handle it.
the health bar are need some work, it's pretty dark on the left side so i'm confused is my health are enough yet or not. the text colour aren't fit well with the background color. it should be either green or cyan. also the text square need some work on the spacings.
the failsound are kinda funny, i love the applause (i'm a music box enjoyer). hitsounds are ok (other might have their own taste)
performance, i think it's ok for my 11 years old laptop. the lag are really common so i can handle it (can be as low as 58 fps)
--
the weeb version are a better one on some cases (like the health bar)
the character on the result screen should be larger.
character on the pause screen also need some adjustments. maybe move to somewhere and make it larger a bit. or if you want, redone the whole pause screen. i don't have idea yet on the pause screen design (still very scratchy)
good luck text can be lowered as much as you can
welp i hope you can understand my rusty english. i'll translate it to indonesia if you willing to