A badge for not using Ballista on the final fight.

[Southernshark]

So I got this badge, and it says only 1.6 percent of players (or something like that) have won without using ballista. The crazy thing is that I don't even know what ballista are, or where you get them.

[steventirey]

Having never finished the game, I can't tell you where they are. As for what they are, they are large, crossbow-like siege engines.

[ajfusch]

The thing Bronn used to shoot down that dragon in Game of Thrones.

Huh, apparently I used one in the final fight, since I don't have the achievement. Can't remember doing so.

[TamTroll]

there's ballista in this game!?

[Southernshark]

I mean I know what ballista are in real life, it was a siege weapon used by the Roman Legions, which yes looked like a big crossbow, but I don't know what they are in the game. Sometimes names are the same, and sometimes it means something else. Does anyone have any idea what these are or where they are found?

[B Unit]

Looks like its associated to the Treasures of Midnight Isle DLC so whatever the final battle is there.

[hilburnashua]

As Sweetchiliheat said, in the final fight in Midnight Isles there are ballista you can use. I never even realized it until I got the achievement for not using them.