The difficulty level of this game is all over the place. On the very first level, there was a bloody awful boss battle that I had to do 15 times because there were no health packs and 3 hits was enough to kill you outright. The game kept telling me how to strafe, but if I tried to strafe their way (using the L2 and R2 buttons) I ran straight into the line of fire. I did much better when I "strafed" Okami-style, by jumping out of the way of the attacks. Nonetheless, I couldn't actually complete the battle until a) I'd killed enough other monsters to upgrade my Nanotech to 16 health points, and b) upgraded my Nitro Launcher (bomb thing) to level 2. It took me so many attempts that I ran out of money for ammo, and had to go back round the level 3 more times to make it up.
On the next world, there was a puzzle level with a gadget called the Refractor, that involved bending the angles of laser beams. There were only tiny, trivial monsters, yet there were health packs EVERYWHERE. I got through the level without losing a single point of health, because it was a brain challenge not a reflex challenge. Meh.
I play a lot of video games, but I'm not actually any good at them.
Tonight I got to the point in the game where I get a 10% off discount on all the weapons because I have a Ratchet & Clank 1 save game on my memory card, and 2 free weapons for having a Ratchet & Clank 2 save game (there're another 3 free weapons to come). This meant I could afford the Agents of Doom, which are adorable skittery skittery robots that scuttle over to the opponent and explode.