How to Hack a Chest Open

You're going to smash the chest open. You hit it as long as you get a 10. Four plus three is seven. Roll another D20 plus five because you do get two attacks on your action. 16, you absolutely then strike the lock and locking mechanism off the chest. It breaks open and you can see the chest on the right is filled with rocks for some reason. The chest ordinary rocks. And that is when you notice that this chest is part of the floor. Just below the chest you think you can hear like little wheels turning which are connected to gears in the ceiling. This room is collapsing in. Are you using mode for cover? I feel like that would 100%