It works. Most guns focus on Samara's Warhammer. A few target the Awesome... because assault mechs are scary. Speaking of, it hits the Whitworth with one of its PPCs (10 damage LA).
Samara's lance focus the Patton. The tank is barely missed by Samara's PPC, but both her lasers melt the front armour (10 damage FR). The Icarus II hits it on the front too, causing minor damage (20 damage FR, minor damage, +1 to driving skill rolls). It had a lot of armour it seemed. The Panthers fire at it too, but only one hits (10 damage FR). The front of the tank was now a mess. Any further damage and surely it would be out the fight.
The field gunners enjoy being able to fire with impunity. A few of their shells hit the Warhammer (5 damage CT, LL) and the Awesome (2 damage LT, RT). The Whitworth also targets the Warhammer, raking it with LRMs and a medium laser (11 damage LA, 1 damage CT, 5 damage RA). Then the Bulldog hits her left torso with its large laser (8 damage LT). Somehow, she keeps the heavy mech upright. It still has good armour left, but that was quite the beating.
The Patton gets a small measure of revenge on the aggressors as it hits the Icarus II again with an AC/10 slug (10 damage LL). The Awesome is tickled by some LRMs (2 damage LL).
(Icarus II and Panther#1 on 1 heat)
The Patton moved up and, then rather curiously, turned to move perpendicular to the approaching mechs. It turns again to face them and obstruct their advance. Everything else, aside from some infantry, remained where they were.
There was no sign of mines yet, but the horrible explosive traps were probably nearby. If the lance got much closer they'd be in range of the SRM platoon.