Moongrave Fane - Cubed Achievement

Majkiy

Achievement located in tab General of Scalebreaker. As it says, you are supposed to close 3 geysers within 3 seconds of each other in Moongrave Fane. Problem is that the boss doesn't spawn 3 geysers on normal, so this achievement is bugged or should be specified as Veteran Moongrave Fane where he spawns more 3 to 4 geysers.