As you might know, daxter carries on from jak while he is incarcerated in haven city prison. daxter takes on the role of a pest exterminator, and as you can imagine this is where the craziness starts, bugs of every shape and size, from little tiny critters, shooting bugs and just plain massive monsters that need a good swatting, they're everywhere and on every single one of the 20 missions, the missions can sometimes can get challenging and can take a while depending on how good you are. Daxter has a cocky attitude and is shown as the story progresses. the controls are easy to get used to, attacking is mostly one button. I rated the game 4/5 because like most PSP games, the graphics are fairly average. The storyline could also use a slight tweak because it only focuses on the basics and not really much of the minor details. Attack and health upgrades are obtained by collecting things known as precursor orbs that unlock dream sequences, in the dreams daxter plays key characters from films (eg - the matrix and lord of the rings) and alot of button mashing is involved, there are about 5 or 6 of these dream sequences, which gives you a break from the missions. i think the most challenging missons are the fish cannery and the second to last misson which is in the prison, there are a few human(ish)guards which gives it that extra bit of a challenge. Overall this game is well worth the money, especially if you like the platform type games where you have to combat enemies whilst getting through the insane but enjoyable traps and obstacles. A great game and you should really take your time in playing it and collecting all the gems and orbs(by the way there are 1000 of 'em). Fantastic :).