It is also unecessary time consuming. For the 12 runs I had to do the "challenge" 3 times doing up to 13-15 events in total (including waiting time inbetween).And the events do repeart fairly often. Personally I would change it to something like that: Imagine you doing the event alone would work like this:Gold = 3 stacks, fills the bar 20%Silver = 2 stacks, fills the bar 17%Bronce = 1 stack, fills the bar 14% With this you would need 5 perfect gold events for 12 (5x3) stacks and the chest to spawn.Silver would need 6 runs for 12 (6x2) stacks and the chest to spawn.The worst would be 8 bronce events with 8 (8x1) stacks and the chest to spawn. This simply would scale with other people. For example with 10 people in total, it would scale to:Gold = 3 stacks, fills the bar 2.0% (20/10) for each playerSilver = 2 stacks, fills the bar 1.7% (17/10) for each playerBronce = 1 stack, fills the bar 1.4% (14/10) for each player So, if the average of the group is silver or better, you do get 12 stacks until the chest spawns.In the end you could end up with 12 stacks quite fast, but if the whole group lacks behind you would need to do more events to spawn the chest. This is of course just an example with some fast thought numbers and stuff. But I think you could actually do this more like a "challenge" than just a unecessary time consuming activity. Even decreasing the event times would help a lot.