Very demented song from a very demented album. The riffing here is entirely brutal for the sake of being brutal here. This song
 sounds like they may have taken a lot of inspiration from Deicide and Suffocation. 

I didn't get too exact with tempos here
 but they should all be within a few BPMs of the recording. Watch for the change in feel from 3/4 to 6/8 in Riff D and the slig
ht change in the riff.