Wow, quite challenging! You've done something super cool - taken two different game concepts and mashed them into one game that is intuitive, logical, and quite fun to play!
When I wasn't dying every 2 seconds, I really enjoyed the polished graphics, animations, and effects. The game is presented really well, and the trains going around the looop fits the theme in a very literal - and creative - way.
I found it pretty difficult keeping the trains fueled, and it seemed that my character had an addiction to endlessly dying and respawning... maybe that is the true loop!
Jokes aside, super fun to play and a really charming submission. I like the direction you took with this game, as well as your profound sense of creativity! 😄