Yay, that's amazing to hear you got to the end! I also didn't really expect anyone to find the final campfire but I'm really happy that you made it! Yeah, there are basically a few 'to be continued' sections of the game which were intended to be filled with different themes and challenges but unfortunately didn't get around to adding them in. Probably should've wrapped it all in some spikes though to put you back at the checkpoint so sorry about not thinking of that
Thanks for submitting the bug as well and letting me know you made it to the end! It's an extra little kick to actually try to finish it :D