There's a tie between 2.
1: Bladder of Steel - Rock Band 2: Basically complete all 6 and a half hours of the Endless Setlist without pausing or failing.
2. Valor Grand Cross - Killzone 2: On here because it's basically broken. Leaderboards for console games are naturally broken and this is no exeption. You have to be in the top 1% of players in a week if that itself isn't hard enough you have to deal with the faulty stats. One week I got the trophy for being in the top 6%. That same week a friend got in the top 1% even though he averaged less points per round, less kills per round, more deaths per round and played less than me. I'm still waiting for my gold trophy Guerilla.
Yea but im not a big player of LBP its more time consuming than difficult. and i have no patience in games. If i die ill quit it and play something else.