Avatar started to move up as well once its allies advanced under the protection of the biotic barriers, but before rounding the corner and coming into the view of the enemy, it activated its tactical cloak to render itself mostly invisible. With its allies attracting the attention of the enemy, the probability of visual detection was below 10%. A tactic often employed by Geth platforms known as "hunters" was to use a tactical cloak to close in on the enemy with close-range weaponry in order to execute a lethal surprise attack, which was exactly what Avatar intended. As Sura was tossing the grenade, Avatar informed its allies of its intentions via their radios, as it had no need to speak aloud in order to communicate with them. "I will advance along the right wall." It warned to prevent friendly fire.

Once the grenade detonated, Avatar stepped through the barrier and rushed forward to close the distance to the enemy. The explosive had detonated just in front of the hostile group, catching two of the Turians within the lethal radius of the blast, while the other two Turians dove to the ground away from the blast. The Krogan behind them was within the blast radius, but the Turians had acted as enough of a barrier that only his shields were drained. As the surviving Turians tried to scramble to their feet, the Krogan reached to his belt for his own grenade, but by that point, Avatar was well-within range. First and foremost, Avatar concentrated on preventing the attack on its allies by aiming its shotgun straight for the Krogan's hand. Despite the armor he was wearing, the close-range blast mangled the Krogan's hand. This prevented his use of his grenade, but due to the pain-cancelling properties of a Krogan's redundant nervous system, he was far more angered by the attack than discouraged. In a rage, he let out a scream, which Avatar judged to be an attempt at intimidation, then charged at the Geth which had suddenly appeared in front of him.