Guild Wars 2

I’m curious how this is actually intended to be done at higher levels (say 20+). I know the tactic at the moment is to only kill mobs on one side, so that the other side stays easy, but this seems a bit exploitative.

So it would be be interesting to know how the hell the developers intended for people to beat this stage without using that exploit, because to me it seems literally impossible otherwise.

It also works if simply the whole group runs fast from side to side. Their aggro range is rather huge and they will follow you halfway to the other seal meaning in that time they can’t heal (at least of them). Works on 30+ as well im failed somewhere.
Some classes can even tank those amounts a while with right positioning/usage of their skills.

I wasn’t aware not killing a mob was an exploit. What’s next, knocking mobs out of control points is also an exploit?

What the dungeon team that designed this intends and what actually works in practice are two different things. I’m sure it wasn’t intended for people to not be able to rejoin fractals after a dc but look at what happened there.