Sorry to intrude into your conversation with Xcheat but there was no way to complete the raid tier 6 completely without taking any damage due to the minion mechs in that raid.
Read the maths here:
The minion mechs had a heat cap of 158 and a cooling of 57.
So to shut them down in one attack you would need 158 + 57 = 215 heat damage.
But even Flaming Scope only has 212 heat damage in one attack.
Therefore they were able to do at least one move no matter what you did.
Also draining their energy was useless, too, because they had an energy-free hook and energy-free close-ranged (1-2) weapons.
As such those minion mechs would definitely attack at least once and therefore deal damage to any player.
As for the boss it could theoretically be shutdown with Flaming Scope’s heat damage as it had 166 heat cap + 21 cooling. --> 188 heat damage needed for shutdown after first attack.
Crimson Rapture (135 heat damage + 48 heat cap reduction = total 183 heat damage) would not have been enough.
The only possible explanation might have been maximum protector combined with some legacy items “Repair Drone” and “Shield”.
But I cannot calculate that as I do not have these items.
Also that would only work out if the result is only counted at the end of the raid by comparing remaining HP with the max HP and then calculating the score based on the difference.
If the system registers the damage itself taken during the mission then healing would be useless.
However that is a part TS would have to let us know for us to understand if it can work or not.