Some things I learned from the most recent Vox lobby:

- pulsar does zero damage to armor, need to test against exposed plates

- skyjacker:
-- can counter hammers, wasn't sure if this was true
-- does most damage if an enemy is going sideways and it bursts in their flight path
-- usually doesn't explode if the enemy is flying directly at you

- dredge can survive with no legs, but goldrush self destructs, need to test other GDRs

- key:
-- can turn to shutdown in combat but hold with grip, not trigger as I was trying
-- prevents enemy skyjackers detonating, can turn off mech and fly across the sky safely
-- holding key in ignition position while overheated seems to drain the heat faster

Pic is a Drill moments after drilling another Drill.