The sound of gunfire was unimportant, they couldn't break through the armor with the assault rifles they had brought with them. The sound of tearing metal was alarming, but so far the left arm was showing only minor to moderate damage, most of that internal from the stresses it was under. The shield was slowly being drained, but for the most part it was a Mexican stand off with a good bit more movement than normal. He really couldn't hurt or hit his opponents without his flamethrower, and they couldn't really break through the Altus mech's armor. He slammed Mr. T into the ground hard enough to actually plant him slightly, before slamming his foot onto him, squashing him. He then took two steps back, putting himself against the shield, whirled around to present the thinner back armor, and activated the electro pulse generator, before whirling back around to fire suppression shots with the impulse cannon.