Okay, I just noticed that there might be a way to deal with these minion mechs without taking damage:
But it requires a lot of luck and Valiant Sniper in a specific level range.
-> The minion mech’s drone needs 6 energy.
-> The minion mech has a teleporter with an energy consumption of 11.
So you need to start at distance 7, then attack with a Valiant Sniper to drain 142-147 energy from the minion mech.
The minion mech has enough energy to deploy the drone, so it will do that. But as the drone does not fire immediately the energy stays at 11-17.
–> You are lucky: Now theoretically the minion mech could make the decision to use the teleporter.
–> a.) But not lucky enough: If it does it might land directly behind you and deal teleporter damage to you which would make it all for naught.
–> b.) You are lucky enough: It lands at distance 2 in front of you and therefore you receive no damage from the teleport.
–> Furthermore if it uses the teleporter then its energy reduces to 0-5 points and therefore its drone cannot fire in that round.
–> You would survive the first round with 0 damage.
–> Now use 2 heat weapons at high level myth to deal a total of at least 215 total heat damage in this round to shut the minion mech down.
(Total heat damage = direct heat damage + heat cap reduction + cooldown reduction)
==> Theoretically you can deal with the minion mechs in this way without taking damage at all.
Just that you need Valiant Sniper capable of dealing 142 - 147 energy damage + at least 1 Crimson Rapture or 1 Magma Blast and one more heat weapon.
==> The only concern is that you would need to make this happen for all 5 minion mechs so you would need to have quite a lot of reloads of the game in cases that the battle does not start at distance 7, the minion mech does not use teleport or the minion mech teleports directly behind you.
Once again this is only a theoretical possibility that would be possible according to calculations.
I cannot test it as I only have one max level myth Valiant Sniper and so cannot get the minion mech to exactly 11-17 energy after my first move.
Also I have neither Magma Blast nor Crimson Rapture and hence could not overheat the minion mech after it teleports to the distance of 2 either.