Intermediate. I know a lot of the how's, why's and how's your fathers, but I won't even begin to pretend I know everything. I know all the important bits though. I know most of the Humanity stuff (Age of Strife through to 40k), some Necron stuff, most Nid stuff (Then again, it's not difficult. They are a giant swarm of Zerg/Xenomorphs that have acid for blood, bones harder than steel and like to eat everything. There we go, that's half of the entirety Nid lore, right there.) Eldar/Dark Eldar i'm not as familiar as i'd like to be, but I know a lot about Harlequins (Cegorach is the only Deity in 40k i'd actually have any faith following.) and I know enough to get by with everything else.