Ratchet & Clank: Up Your Arsenal/Marcadia

Get to the Palace
At the autovendor next to your ship, the Spitting Hydra is now available. You will have two allies helping shoot the enemies for a little while. Follow the path and clear out the first large area with the broken railings. The pots in this area are breakable for extra bolts. Follow the stairs up, and get the jackpot crate which will double all bolts and experience that you obtain. Clear out all the enemies in the area and follow the stairs up until your timer runs out. Go back to the large room you were in, and use a boost jump to get up to the small northern platform. There is a tower of crates with an exploding crate at the bottom. Shoot the exploding crate and get all the bolts from these crates. From here you can also use the N60 Storm to pick off some of the enemies ahead.

Follow the stairs up past the small pool of water and you will enter an area with multiple enemies and a large mechanical enemy in the centre. Take out all the smaller enemies with the Shock Blaster or N60 Storm, and then switch to the Nitro Launcher to take out the larger enemy. There is also another large enemy across the bridge, so use the Nitro Launcher to take him out as well. Stretch Jump across the gap.

On the other side, there is an Inferno Power crate. Destroy that crate and take out all the enemies with your Omniwrench. Once you kill the last enemy, go back and break all the crates for bolts and ammo before descending the stairs. A short cutscene will follow, and then you must help the ranger clear out multiple enemies on the path to the dropship. Break all the remaining crates and then climb aboard the dropship.

Operation: IRON SHIELD, Part 1 – Secure the Area
This is the first available battle mission.