The “In for the kill” talent states “Each enemy Hero hit by Boosters increases your Basic Attack damage by 10% for 5 seconds, stacking up to 5 times.”
However, this only affects the Mech’s auto attacks and does not affect the pilot’s auto attacks as the buff disappears after casting Self Destruct. I believe that the talent should state that it only affects the Mech’s auto attacks or the talent needs to be updated to increase the pilot’s auto attack damage as well.