Stage 1 and it's many feel changes is wonderfully chaotic, I like it! Also did you by chance use an sc88 snare sample? I swear I'm hearing one in there :)
I used the Steven Slate Drums 5.5 vst for the drumkit (specifically the Deluxe Metal 01 preset). Not sure what snare they sampled, they just list it as "Snare OldZep SSD".