I'm all for a challenges I did lots of gm's but light blade gm in terms of challenge difficulty from this to the next hardest is leagues apart, you might call it "over powered". All gm's have the same level of reward but make one insanely harder for the same result which isn't right.
Lightblade needs to be dialed back a bit to fall in line with the others.
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must use nightsalker. minimum 1 that can go invis forever and get revives. 1 shadebinder warlock for the spawn killing 1 champion with supers. only the boss room is hardest. maybe the entrance lucent hive with silent grenade throwing, but 1 hunter with witherhoard can just tag them, finish them and get out safely.