Possible.Depending on how populated the server is etc. pp.

You can potentially get 2 Rogue Ninjas every time they spawn. For me, I rarely get 3, and since there is 10 waves, yes its possible.

My record is 15

My groupmate's highest is 34.

He gets about 3-4 rogues per wave.

When my server wasn't merged of 2nd merge I used to get around 30 kills because more than that its not worth, you don't get any rewards out of it. And all of these kills just because there was almost no one who would participate in this event. But now as we have 2nd merge and try to do in teams, get around 15-20 wins. Those who solo can do faster ... but then they take away from other players rewards that they could get.

Hello!

Like what other users said above me, the answer is Yes. A player can get as much or more than the number of points that you've said and there's no Cheating involved in that situation. Obtaining high points relies on some elements that your server have and that's the population of your server/merged server or the participants of the event and also the team that one player use.

U do get 2 cave keys after 10 kills so you made 60 cave keys in that event.

someone in my server got 45

as long as u got hiruzen, asuma, and iruka, u can easily get at least 15 kills in rogue provided ur decently powerful for ur level