.hack Vol. 2: Mutation Cheats

Ok, this is something I found very interesting in the game. I believe after you clear Theta Server "Rejecting, Oblivious, Wavemaster" you can then go back to Delta server, "Hidden, Forbidden, Holy Ground". Doing so will trigger a scene from .hack//sign (You'll see a scene of Mimiru and Bear asking Tsukasa about his situation in the Real world). And in return you'll get the M:Wavemaster Key Item and a Golden Grunty which will raise your Max HP by 30.