Might as well call it Guild Arena Event. I call it Dummy Punching Event, cuz it's basically the only thing you're doing: Beat up TestDummy-kun and attempt to do as much dmg as possible within 15T. And yes, as you might already tell from my choice of tone, while I did okay and got my share of 15k medal, I find it boring + lazy design af for an event. Obviously there's minor bit of strategy in maximizing your dmg but that's about it. I'd rather go fight some High Rags.