Apparently someone new has hired thugs 4 less. Hmmmmmmmm.

Challenge 1 : destroy the defenses
Disable the disposal facility's defenses. There are 6 turrets. They get repaired so you have to take them out quickly. Kill 3 or 4 of the turrets, then kill the robots. Then send torpedoes at the last ones.

When you do this, it shows a commercial, then you get either a new map or other challenges. If you redo #1 you get 2900 bolts.

Challenge 2 - take out the saboteurs
Prize: 9000 bolts

Challenge 3 - destroy the berserk repair drones
Prize: 10,000 bolts

Challenge 4 - Race through the disposal facility vs ace bunyon
Prize: 11,000 bolts

Note during the race to use the barrel rolls to move left and right, do NOT just turn your nose because that causes a drastic see-sawing change.

Ratchet and Clank 2 Going Commando Walkthrough