1.street fighter IV - no challenge to hard - clear hard trial in challenge mode - 20G/bronze trophy
2.. wipeout HD - beat zico - equal or beat the lap time of 30.82 sec on anulpha pass - gold trophy
3. mirrors edge - chapter 2 speedrun - complete a speedrun of chapter 2 below target time - bronze trophy
4.rock band 2 - the bladder of steel - complete endless setlist 2 without stopping - gold trophy
5. lost planet - extreme soldier - complete campaign on extreme - gold trophy

these were not made up by me they are some o the hardest rated on the powerstation magazine.

some do sound pretty hard though