This is a fun game, that bends RPGMaker in ways I didn't think were possible. I do think that the time frames were just a little too tight - maybe 10 more seconds on the last two levels would make them feel a little more fair, and instead of saying to strafe on the grass, it would be a little more clear if the hint said to 'follow' the grass. That said, once I figured out level 5 it was really cool to me. The final boss is super buggy - every time I pressed W, it would trigger the rush two more times afterwards, and if I jumped or dashed while approaching a corner of the rails it would send Enrem out of bounds.
Seeing Enrem get to such sizes was a delight, though, and although this has been a rough time for you (based on your comments elsewhere), seeing more game in this style would be pretty neat. Maybe with longer time limits, though. Both in the game, and on yourself.