Woah that was a fun ride! Reminded me somewhat of the Catacomb Abyss series. Despite the graphic limitations of the premise I never got lost, so I guess that talks about good level design. I liked that there are no hitscan enemies, and the guns are fun to use (although the sound for the gatling gun is a tad underwhelming). I'm amazed you could do this in just 7 days! Great work.