Alright, even though there's like 7 hours until the deadline, the first entry has been submitted! Because the level plus the graphics is over 128 kilobytes, I will use two attachments (one with the actual level and some graphics and one with more graphics).
Okay, enough with the copy-pasted message from my entry for Duckman's creator contest. I just found that it also applied pretty well to this contest's entry. Because you never said whether custom tiles were allowed or not, I'm just assuming that they are.
My level is called "Prison Escape", and in it, the crew gets trapped in a prison, and Viridian needs to help them escape. I know, a little cliché, but I had no other ideas when I started the level. So, here's the level!