First of all, the character is cool, likable design.
The environment is also pretty good, though some sprites appear on top of the character, some behind, some have collision some don't have collision, a bit inconsistent.
The attack on F key is a bit hard to see, I would appreciate some kind of an effect in front of the character to more vividly show the attack.
Sometimes the blackouts bugged out, they didn't happen fully, but when I went downstairs and then upstairs again it happened. Not that gamebreaking tho.
I was just about to compliment the music as it reminded me of old sonic games, but noticed that it's not homemade. Would appreciate some custom tunes next time (I know it's hard with such short time).
The minigame is very confusing, it feels like it has to be rotated -90 degrees and the controls would make sense.It always confuses me.
Overall a pretty enjoyable game, nothing gamebreaking happening, music fits the arcadey theme, character is likable. Good job!
Don't stop making games!