I just beat guitar hero on hard and unlocked the "Snaketapus" guitar (which is a skull with snakes coming out of it....guitar....) and the Gibson SG in coop.*

*I relise this isn't such a big feat with people getting 5-stars on jordan and stuff but since I actually have only been playing this game for 3-5 days, and that I beat it on hard on my first time I believe its a achievement.

Yeah....that went longer than expected...