Secret Agent Clank is a very peculiar game, as not having Ratchet in the title of the game means you can still play as a secondary character and that's a problem for this game.
The game's graphics are interesting, but in some stages, such as the last one, my Playstation portable became so bright that my eyes started to hurt.

The story is about Clank trying to get Ratchet out of prison for a crime he didn't do, but there are some things that don't make sense about the character Captain Qwark being playable, in my opinion he's the most annoying character, especially the theatre stage where he hums so much and the stage of protecting the dam is just boring.

The weapons in the game are creative, for example the shock rain guarad was a weapon a few times, but I used mini bombs is a very powerful weapon.

The stealth in this game is good, but there is a possibility that one of the buttons will be wrong and the quick time event will be cancelled.

In short, the biggest problem with this game is that it doesn't have Ratchet and the new attempt at stealth wasn't the best.

Somehow worse than Size Matters. The story is complete nonsense, to the point where someone at High Impact had to specify in a tweet that it wasn't canon. Clank's arsenal is clever, but not very fun to use, especially when the majority of combat encounters in this game are stealth based. Ratchet gameplay is similar to Size Matters with an even worse arsenal, and the Qwark segments are good for little more than a light chuckle the first time. You change gameplay styles once every 20 minutes, and none are fleshed out enough to be interesting. This game suffers from a serious identity crisis, and I will not be picking it up again to help it figure itself out.

Ratchet and Clank: Size Matters is a game that really hasn't aged well when going back to it but things could be made a lot better had they made a sequel. Instead they made Secret Agent Clank which came out a year later and proceeds to correct almost none of the problems that plagued that game and only exasperates the bad shit tenfold.

The story is borderline incomprehensible rubbish that apparently thinks that Clank IS a secret agent (even though in the third game he's just a fictional character in a TV show) and sees Ratchet being framed for a crime he didn't commit. Apparently everyone except Clank is stupid to not realise the red things on his head is a dead giveaway that he's being mind-controlled and it only gets more weirdly convoluted as it goes on.

Gameplay wise things haven't improved much. The weapons are still crap (and somehow even worse this time around) and the stealth sections get repetitive quickly especially if you're using Clank's takedowns.

Not helping in the slightest is the bloody terrible other gameplay segments that take up the bulk of the game such as the atrocious rhythm sections including a particularly awful one at the Casino. Ratchet's playable for a few arena battles at the prison he's been sent to but those grow old pretty fast as does the Gadgetbots levels. Special mention goes to Captain Quawk who despite the fact that he's playable for the first time, his levels go on for about 100 million fucking decades and any jokes that may have been funny are stretched past their breaking point.

This really should have been where big improvements were made for Ratchet and Clank's second PSP outing but instead High Impact Games fucked up big time and gave us the worst game in the series to date. Consider this agent shaken, stirred and a big load of Clank!