Ok, so I finished the just now. I really liked it even it there are parts that seemed tedious. I would've but a bit more checkpoints to prevent a mistake from losing progress, but that's just my opinion. I can see that maybe you wanted to go with "realistic" survivior vibe where the game is trying to break you motivations just as nature won't be kind to you. Howeverm it maybe that my keyboard has issues or my low ability in plataformers
I found some wierd bugs too:
Near the end of the game close to an area with many blue enemie. I fell off a cliff and reached a pitch black set of plataforms.
Sometimes the wolf might switch direction for no reason, even if it had just went past the place were it switched directions
I died as I climbed a snow wall. While it took me to the checkpoint, for a couple of seconds I could keep climbing the wall
When I got the lever, the message was in portuguese, I think
I think the game should have a windowed option. I think that many messages were working oddly on my screen because a resolution issue.