You can't combine clumsy controls with erratic gameplay and walk away with a winner.
It definitely had its moments, so I wouldn't call it a complete waste of time, but I definitely did not walk away from the game feeling as though it was worth the money I parted with to have it. From the get-go, Stewie's toddling method of movement adds an extra challenge to some otherwise straightforward jumping puzzles, interspaced with repetitive third-person shooting action. Thank god for the lock-on ability, or I'd have gotten nowhere fast.
From there we have Brian's stealth puzzles, which are probably the best thought-out of the game, and aside from the fact that they're dull compared to the rest of the game, I can't really fault them.
The real kick in the pants comes when you take control of Peter for some old-school beat 'em up action. I like that you have to use kicks to dispatch children and punch adults. It adds a little flavour. I like the idea behind collecting snacks that fall out of your fallen foes in order to charge up a meter that fuels what I refer to as the 'snack attack' (I have no idea if that's what it's referred to in the documentation), where you perform an upside-down spin kick that eliminates all in your path for for too short amount of time to be worth the amount of food Peter has to consume in order to use it at all. Another problem is that overwhelming number of enemies that take a fun, enjoyable game into the frustrating realms of near-impossibility. Perhaps that's misleading: the waves of enemies are just right, but being swarmed by enemies, half of which won't even be phased by your feeble kicks and simply nibble away at your health meter - which you can never adequately maintain due to the depressingly seldom appearance of health power-ups.
My particular pet hate are the police officers - and not just the armoured ones who have to be beaten exclusively with a hard-to-aim leg sweep (that only works about half the time) even after you've stripped them of their shield.
Being surrounded by six police officers who appear to take no damage from your attacks, never falling down and simply lay down the smack until you die is irritating as hell - I can't help but feel this is an error in the game itself, as other times (once again, about half the time) a far less vicious series of attacks will easily knock an officer to the ground, where he can be picked up and used as a short-range projectile. Would it have killed them to add health meters to these enemies, so we can at least be aware of our progress? This would certainly be more useful than Peter's, which as I've mentioned already simply goes down with few if any health bonuses to alleviate his suffering. There's certainly no need to know how fast we're dying, since the objective is to kill all enemies while taking as few hits as possible. Knowing how fast our health is dropping doesn't make that any easier.
Add this to missing checkpoints, places in a Peter level where it feels as though there should be a checkpoint to continue from but there isn't, meaning when you die you get sent back about twice as far as would be considered reasonable in any similar game.
I like that they signed the original voice cast for the game, as with any other cartoon tie-in, it adds a much needed touch of authenticity. But the one-liners get old fast, and most are recycled from episodes we're already tired of watching.
Enough with the nitpicking. In my opinion, this is an interesting, yet ultimately poorly planned and poorly designed game that while bearing some value as an interactive episode of a pretty good show, is practically unplayable and certainly not worth the frustration you'll suffer as you attempt to hammer your way to the end.