It's a fantasy role-playing game.

DM: You are Vax Vax'ildan, a half-elf rogue . You are the member of the famous group of adventurers. Previously,  Some of them splintered off to try and acquire the goods that were taken from his store, however they apparently had already been stolen from the location they were being stored in, or been delivered already, they're uncertain as to what became of them. But they get the sense that it was probably best that they chose Gilmore over the gold, at first glance.
DM: Go for it! So first strike against it, as you (whoosh) whip around the side of the building, blades out--
Player: 25!
DM: That hits!
Player: And then for the dude by Scanlan gets a-- word, 19.
DM: Yep. If you have both blades out, you get a third attack too, don't forget.
Player: I do. Oh-- yes. So the third stab will go back at the wyvern.
DM: Okay! So the sneak attack against the wyvern, first strike.
Player: Yeah, and the last one was a 24 total, so that hits as well. Okay! So that's two, one, yes. That's 14, 17, 22, 23, 25, 27, 29 into the wyvern.
DM: All right.
