If an enemy mech is on the other side of a wall, ram
into the wall and zoom in. You will be able to see and shoot
through the wall. Note: This trick works with mountains and other
walls that can not be destroyed.
Published strategy guides: Mechwarrior 2: The Official Strategy Guide
Published strategy guides: Mechwarrior 2 Strategies & Secrets
Published strategy guides: Mechwarrior 2: Expansion Pack Secrets and Solutions