It's a fantasy role-playing game.

DM: You are Mollymauk Tealeaf, a tiefling blood hunter . You are the member of the famous group of adventurers. Previously, Caleb grapples it with Earthen Grasp. It manages to clean the tar off the lens, and breaks Caleb's concentration on the grapple by pinning him against the wall with a blade through the chest.
DM: For those questioning, even though it is blinded, it lowers its attack, because some people are like, "Attacking things with blindness have advantage!". Because it is nothing but a spinning, whirring of blades, and technically it has multiple forms of sight, it is not granting advantage on the attacks against it.
Player: I’m going to try and hop up that hill really quickly.
DM: All righty. You try and move this way?
Player: Yep.
DM: All right, you’re hopping up this edge.
Player: As high as I can get to get out of its range.
DM: Okay, so that will be probably over here, best you can for this.
Player: Yeah. Right over there is good.
DM: You manage to scoot yourself up to that side and climb away. It does swing out towards you. It does have disadvantage on the attack because of the blindness. That will bring it to a 13 to hit.
Player: That does not hit.
DM: You manage to duck out of the way.
