Raid gone wrong..?

[Lollie]

Lots of possibilities. By the provided description you were attempting to handle the mechanic properly, so one or more of the following apply.
-They were trying to do a speed run of it by ignoring them outright, with current over gearing you can kill the oppressor before the first jump by ignoring the alarums.
-You were taking them at which point people expect you to be able to kill them on your own. One dps should be able to take out the 2 per side easily (in minimum il gear) which doesn't sound like you were able to do before getting yourself mini from the stacks.
-Someone else was designated to kill them and you took them before they could, smn for example.
-Plethora of hesaid/shesaid gitgud coming comments from either or both sides. That were not shared here. (nor do they need to be, just saying communication lacking is a major possibility)