The Collision for the level was broken in the import, meaning that none of the buildings have collision and you need to press escape to beat the first level and skip the second level's cutscene. Boss has invisible hitboxes, but can be beaten.
Don't let this influence your voting, it is what it is, but I put a fuller version of the game with the imports fixed up here https://reyna-cruz.itch.io/skate-knight. Check that out if you're feeling it, I promise it's better lol