Every musician played. If you read the song titles, you'll see when some musicians switch out and stuff. Everybody advertised to play on Death To All, minus the dude from Obscura, played.
Also, Gorguts setlist should be up in a matter of seconds
8/29 LSD and the Search for God
9/9 Creepers/Tony Molina/Drag Majesty
10/25-26 Thou & The Body