MechAssault Walkthrough:
Size Matters II

You come out of the mech area in an Atlas. You have to destroy the enemies. Head over to the regional palace. Note you have flares - use them!.

Briefing Boy cries out "ambush! Just a cougar". Now shoot out the grid wall and go through. Fight through, kill the mechs, lots of armor and health lying around. It's pretty straightforward.

MechAssault Walkthrough, Tips and Techniques