At the moment the Blue Death, even after the buff, is unsustainable. After the update I did 14 runs; from the drops I've made around 2.2kkk.
So for these 14 runs I've used 28 keys. At the moment 1 ore is around 4.75kk; you need 10 ores and 1 head (6kk) + 3kk to craft the key. This brings the cost of one key to 56kk. Having to use 2 keys per run, that means 112kk only for the tickets. If you don't want to waste time, you have to spend 10kk per run for the stones, bringing the cost to 126kk.
So to do those 14 runs I've spent 1.76kkk, bringing the profit to 436kk, without considering the consumables I used. 436kk profit for a 30–40 min run.
Making around 60kk per hour (without considering the consumables), considering that this is a high-level dungeon for which you need more than decent items to be able to do it with only 1 attacking character, is a bit too restrictive for a run that overall is nice.
After the buff, in these runs I've got only once 10 chests; 2 times I've got 8, and the rest 7.
Saying all of this, the path to make this run a viable way of farming is to really increase the chests dropped, because with 7 chests 11 times out of 14 you can't make almost any profit, or to lower the materials needed for crafting. 10 ores per 1 key seems excessive; maybe 5 would be a better choice. Maybe reviewing the chances and the drop itself would be a solution too, donation ticket is the 2nd most common drop which are completely worthless
So for these 14 runs I've used 28 keys. At the moment 1 ore is around 4.75kk; you need 10 ores and 1 head (6kk) + 3kk to craft the key. This brings the cost of one key to 56kk. Having to use 2 keys per run, that means 112kk only for the tickets. If you don't want to waste time, you have to spend 10kk per run for the stones, bringing the cost to 126kk.
So to do those 14 runs I've spent 1.76kkk, bringing the profit to 436kk, without considering the consumables I used. 436kk profit for a 30–40 min run.
Making around 60kk per hour (without considering the consumables), considering that this is a high-level dungeon for which you need more than decent items to be able to do it with only 1 attacking character, is a bit too restrictive for a run that overall is nice.
After the buff, in these runs I've got only once 10 chests; 2 times I've got 8, and the rest 7.
Saying all of this, the path to make this run a viable way of farming is to really increase the chests dropped, because with 7 chests 11 times out of 14 you can't make almost any profit, or to lower the materials needed for crafting. 10 ores per 1 key seems excessive; maybe 5 would be a better choice. Maybe reviewing the chances and the drop itself would be a solution too, donation ticket is the 2nd most common drop which are completely worthless