This seems like the start of a cool project!
I like the art style, I'm trying to make similar wall-tiles in a future project.
It was fun to run around and grab up all the batteries and push the switches (nice surprise when I found Shift moves faster and Spacebar interacts).
I used to love tracing my path through mazes with a pencil, not sure what all you have planned for this but it might be interesting to have the character leave a trail you need to connect to the finish, but the Roomba boss is trying to clean it up (like reverse pac-man).
Nice stealth / maze runner genre mashup concept, good work!