The hackers (Punio and Rece Drewniane) trap people with impassible objects such as stones, and then kill them by summoning unlimited hunters/fire elementals/giant spiders (funnyly, they all drop loot). Punio mage went from lvl 8 to 73 within 5 minutes, seems like cheating too.
.. What now? A simple reset will not do, there's nothing that stops them from doing this again. Bastards.