I've gone at it twice now, and i've been defeated both times.
First time, i didnt realize how useful a 10mm gear wrench was, so i bought one
second time, I couldnt get access to the bottom 3 bolts, even with the engine off its mounts and lifted ~2 inches
This third time, i'm planning on tearing the whole damn exhaust piping off underneath to get to the bottom 3 bolts on the valve cover.
Whoever at subaru thought this was a good idea deserves to be punched in the dick.