Um, that was awesome, just awesome. Music, atmosphere, sound effects, graphics all contributed to the perfect retro-future experience. I mean. . . maybe could have used one less monster battle? After mowing a few mobs down I got the idea. Also when the shotgun misses and a squid survives by like 7 hp it's frustrating. . .but I'm stretching for any improvement.
You must have some real experience with this genre and atmosphere building because I found this great. I'll be happy to rate your game in other game jams going on as well. This was the perfect short game experience.