Ok, new challenge:
Complete an endurance run with your main killgem level 3 or below.
Max (or any harder) settings not required.
Proof required: level three or lower gem with half plus one of the total kills at the end of an endurance run.
Hint: Mana farms are ok as long as they don’t kill the monsters to the point where the g3 doesn’t get half+1, and there is no limit on amplifiers grades
I will be impressed if lvl 2 or gulp 1 is used, or higher endurance settings are used.