just beat it for what i now realize to be the first time
all it took was a shotgun
also i actually did this a long time ago but there was nowhere to post it: i compiled the game's audio tracks into one file for easy listening, it culminates into awakening
http://brown townblaze.com/audio/RECEIVER.mp3
here's a different version that is just in the most intense state the whole way through
http://brown townblaze.com/audio/RECEIVER.wav