Thanks for playing! On level 6, I made the corridor for the blue unit quite long so that you have to move back and forth constantly with the red one to actually survive. I thought it would be a way to understand better the move timer mechanic, perhaps a tutorial level would have been good (but I ran out of time for the jam, so I stuck with a wall of text in the "How to play" section of the main menu.)
Glad you liked the mechanics anyway! :D