I finished the game! had fun but I'm not sure how to get the first ending? (Lost Forever) from the description and getting the two other endings I assume that I somehow don't pick either of the doors but I don't see how to get that as an option in-game , any help?...

I think the difficulty level is just right and interesting. By the way, it sometimes behaves like a bug regarding jumping. Sometimes it jumps in the opposite direction of the first jump. It seems to happen more often when jumping to the left or right repeatedly, but I have the impression that it occurs randomly. * Automatic Translation...