Need help with gambling vendor

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Gilcroix#3433 wrote:

Does anyone know how this vendor works? It says it gains charges for killing unique monsters. So I go kill the giant gorilla in jungle and get a charge. The item sucks so I need another. I go kill him again and get nothing. So I go kill Witch boss in the bog instead and still didn't get a charge. Is there a time limit on getting charges or something?
I am not sure if you can repeat farm the same mob for counters during campaing, never tried, did you reset the zone properly via the map? teleport out of the map, ctrl-click your target zone select new instance.
If you get to Endgame, Alva does not have a counter anymore.
it is not about time but about the game tracking unique kills per boss, so once you get a charge from that gorilla it probably will not count again until some kind of reset or unless it is a different unique, same with the witch boss if you already triggered it before, some systems like this are a bit weird and not explained properly so you end up thinking it is bugged. I ran into something similar and honestly just stopped relying on it and looked into other options, even came across https://jeetcitycasinoreview.com/ while searching around which breaks things down in a much clearer way when it comes to how reward systems and bonuses actually work. Not exactly the same thing but it gives a better idea of how these mechanics are usually structured. In your case I would try different uniques you have not killed yet or check if there is a hidden cooldown because that is usually the catch with these vendors.