Ratchet and Clank 3 Up Your Arsenal Walkthrough
Death Valley 1 - the tunnels of outpost X12 (10,000 bolts prize)
Fight your way through and get picked up on the other end.
Death Valley 2
Now you're flying the Hovership (15,000 bolts prize)
Death valley 3- Assassination (20,000 bolts prize)
You're in a buggy
Death Valley 4 - Reclaim the Valley (25,000)
Death Valley 5 - X12 endgame (30,000)
You get a warp pad gadget for finishing this, which you need in Quark's Hideout. You also get a Quack-o-Ray as a new weapon that's available.
Ratchet and Clank 3 - Up Your Arsenal Walkthrough