Thanks for the feedback!
Sorry, I thought the tutorial text would be enough of an explanation. I'll try to figure out if I can reword it to make it more clear. Yeah, I tried to lock the rotation during movement but I couldn't get a reliable system running in time to submit. I'd rather let people cheese the game during this jam rather than have the people get stuck constantly, thus forcing restarts.
I plan to develop it more after the jam. I was rather pleased with the general concept and execution. Maybe not the level design though. I had to rush that and still didn't get them all done.