Good job! The cover of the game was quite eye-catching. I enjoyed being able to move around the train to control different weapons.
I think it would've been a little nice if the game was a little harder to lean in to the "crazy" aspect of the game, but there's definitely a foundation to build and balance that! Also, I wasn't sure if it was a bug, but when I was playing in the browser windowed, I could constantly press the Space bar after the second level and choose the past upgrade that I was prompted for over and over, so I ended up having a LONG train on the second level.
Overall, great job on the game!