There is a discord community where they have hacked clients, one being a hack for our server. This guy called goodralover is using a hacked client.
I also saw Kakaseka use a hacked client. He is a huntress and he is wielding a doom bow.
Bionex also used a hacked client, but I didn't get a screenshot of him hacking. He appears to use two separate clients. One legit and one hacked.
The hacked client consists of multishot, godmode, dex hack, and autokill. Unfortunately, I can't give out the discord server of where this hacked client came from.