Not a Sentinel sized hole, no, but a Heavy Bolter sized window.<br/><br/>And most of the cutting will be done with Darius's powerfust and Sarah's power sword.  Arkhah could just melt the last few inches...<br/><br/>When Darius opens up on them from this window, we toss smoke grenades, and then the Sentinels charge the rear of the enemy line, and the rest of the group charges to get into grenade range.<br/><br/>I think it has a good chance of working as we hope. (Expecially, as by the time Darius and Arkhah have opened that flanking window, 3 more Sentinels will have arrived.)