Challenge for pro players

[server]

I don't know exactly what challenge can be added, but that it is as difficult as Helga hater in first version (resetting all progress at death). Can do Helga hater ll, with the Condition that if you die, you will lose all progress. Not 2 or 5, but the whole. Well, accordingly, make more of the reward, and perhaps some special yellow bonus, for example, immunity for 1 minute after the start of wave 17 or something else useful (I mean yellow as a larger radius for barrels or a quick revive. In general, something very hard.