Nice atmosphere and vibe, very creepy. The graphics also looks quite nicely polished.
My main feedback is that there's a bit of a lack of novelty, the game is a little generic. The overly branchy paths of the map aren't too interesting and really only lead to confusion about where to go. Maybe the monster stalking you was meant to be that interesting feature, but once you realise you can outrun it, it's totally trivialised. I also feel like the approach to the theme 'death is an opportunity' is somewhat superficial. I managed to beat the game before losing all my lives, but what would happen if I did? I could just start a new game, no? I feel you could have integrated the idea more -- maybe with each death, your connection to the monster heightens, you run faster and get minor wallhacks, but the monster's ability to detect you increases too? There's a rising tension, each run becomes faster-paced as the stakes increase. Something like that.
In any case, you clearly have quite a knack for crafting a cohesive vibe, and the level is impressively extensive and varied for a game jam, so I really commend you on that! Great job and would be excited to see where you might take this concept!