Great gameplay! It's pretty cool that the enemies become obstacles after you've killed them.
A downloadable game for Windows and macOS
WASD or LEFT STICK to move.
MOUSE or RIGHT STICK to aim.
LMB or RT to shoot machine gun. Bullets can pierce walls.
RMB or LT to shoot shotgun. Shells bounce off of walls.
You can move between black and white areas through areas, that are being recolored.
Beware of shielded enemies, as they can be killed only when shield is invisible.
Good luck! Share your results in comments!