I played this at the same time I was playing Socom 2 and I finished it today on Cinco de Mayo(May 5th).The levels are larger than in Socom 2 and there is less emphasis on STEALTH.Most of the missions are of the run 'n gun variety,so you can just go in with guns blazing and just wreck shit.This game is different from the previous 2 in that this game has checkpoints.You read that right;CHECKPOINTS.When you complete an objective,the game saves automatically so that when you die,you don't have to restart the whole mission.You'll just start from the last checkpoint and continue on from there.This game has 12 levels,just like the other Socoms.Another major difference is the PSP Crosstalk.The game also has Crosstalk Objectives for you to complete.