The tides of Tyranids hadn't come yet, but they came soon enough. Having them trapped in a single corridor put them in a killzone. The tides of knights rushed through the hallway, stepping over one another in an animalistic rage to kill. The superheavy terminators fired their combination of extremely heavy weapons, with plasma bolts and jets of flame flying into the oncoming wave, mixed in with blasts of autocannon fire. Those that got close were met by the power mace of General Diomedes and the Ax of brother Heracles, not to forget the power sword of the brother-chaplain. Damien stayed in the back, sniping with his stalker bolter whose rounds were coated with a special acid that burned through entire Tyranids, cleaving columns out of the corridor. The Brother-Librarian sent out bolts of psychic energy that killed Tyranids from his staff.