Thank you so much! I did the 3D stuff on this and it was my first time doing fully-fledged models for a game, it really was a ton of work, but it's great to hear that it was worth it in the end! I'll post some of the assets later on my Sketchfab account, maybe make some of them freely available!
About the 2D game's background, I think I know what might have happened... The 2D game's map's boundaries are pretty broken in this build, so you can very easily clip through the walls, ignoring the collision. Outside of the walls is just a black void, so you might have just clipped through and was stuck moving outside forever. Really unfortunate, but it happens on jams! Thank you for playing though!