The art for this game was on point, I really loved the different character designs and some of the enemies looked absolutely terrifying. I thought it was a very polished looking, with a minimal but still informative UI that didn't mess with the overall vibe of the game. Having the world loop around was a neat touch, and I liked that the radio parts were scattered randomly (although sometimes they overlapped a bit). I'm impressed you managed to do two playable characters - although their mechanics weren't that different, it was a nice touch and meant I played multiple times to try each one out.
Introducing more (and more difficult) enemies every so often did increase the difficulty, but towards the end it felt a little bit too much. It was especially a shame because the last enemies had some really cool designs, but I was usually too focused on trying to run to a hiding spot/the next part to really pay them any attention. I'm not sure what percentages were unlocking the newer enemies, but I didn't get to see the human deer/regular deer until the 60-80% range, which felt very late. I would maybe have either introduced them earlier on but lessened the total number of enemies, or given the spawning a weighting that produced less of the early enemies.
Really speaking the only thing that was a problem was the agility of the character. Jumping over the pits was a pain, and I died more times trying to get over them than I did by the enemy attacks. I feel like if they're going to be that hard then at least preventing the enemies from moving over them would make it a little bit more fair.
Overall though this was a fantastic submission, with a really polished look and feel. With a couple of gameplay tweaks I think it would be a neat little game!