This looks like a nice engine for a good fun game if there were more levels and enemies wouldn't shoot you through walls (which as I read here probably a bug). I like the sprite work much.
Viewing post in Silhouette Infiltrator jam comments
indeed, it was a trivial bug, and I fixed it today. Here’s the fixed binary if you want it: http://nuclear.mutantstargoat.com/sw/games/infiltrator/releases/gamefix1.exe