I like the idea of a beat-em-up skateboarding game, but boy howdy were the controls fighting me at every step and turn in this. So my first instance of getting hit actually apparently launched me all the way across the first level. This also, unfortunately was the only time I completed the first level. Though, admittedly, I dunno if it was completely finished as when I got to the right edge it was mostly just grey blocks rather than the street tiles. Although that may have just been time constraints too.
After that my problem came down to actually getting a board so I could get across. Talking to the NPC didn't seem to give me one, so I tried to punch the kappa.. and died. Dunno what the range on the punch is. I sorta felt like it didn't work from you zalgo'ing the text. Next I tried jumping and had mixed success aiming the jumps lol.
From then on I had a hard time progressing at all. Timing the jumps was rough (though you've addressed this with other comments), and also I wasn't sure if grinding was a thing because the collisions on the rails were so hit or miss. Couldn't tell if they were meant to be solid walls or not :s
Despite all this I did enjoy the idea, art, and audio though. So it's more of a polish and UX pass that seems to be needed than anything else.