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, They  also found that a number of gold coins, a bit of his horde that had been buried, were now exposed by these strange smooth tunnels that were carved into the rock. Upon  Vex , Scanlan, and Trinket inquiring there, the rest of the party scattered: Pike and Keyleth went to find what seemed to be the owner of the house, now frozen in fright in a far alcove; and the rest of the group traveling towards the mouth of the cavern itself.
DM: All right. That definitely hits. However, it is not sneak attack damage. You are hiding definitely behind the pillar, but your footsteps. And you get the essence as soon as you see the creature, its head follows you across the room, you get the sense immediately that it is not a sight-based creature, it is definitely a movement-based creature, and its head just follows you as you move.
Player: I'll defer, but let me ask, going stealth and rolling a 28 on stealth, the footsteps were still enough to alert it to where I was?
DM: Is it a natural 20?
Player: I didn't attack yet. No, it was a combined 28, just to go stealth.
DM: A combined 28. Right, even so, not quite light enough. Not with the knowledge that it was an issue with this entity, and due to the proximity of it, and it being a very sensitive creature to the rock's movement, it still picks you up.
Player: And I should have one attack. I should have an attack, right? Because I did the boots, I ran over here--
DM: Yep, so you have an attack.
Player: Two.
DM: Well, two attacks, you have offhand, so yeah.
Player: Two, yeah. Two, because it was double the speed because of the boots. All right. First one is shit. That is 14. And the second one is-- I'm going to do Luck on that. The second one is 20.
DM: The second one hits. The first one unfortunately just bounces off of its hide.
Player: That's not a lot. But it is seven points of damage.
DM: Seven points of damage, got it.
