Combat Action: Hide

The rules for hiding in combat are all over the place in the PHB. Also, there's a lot of "The DM will tell you when you can do this"-type verbiage to these rules. So, for clarity, let me explain exactly how I intend to adjudicate the Hide action in our campaign.

You may attempt a Hide action whenever there are NO enemies who can see you clearly. If you are behind cover, under concealment, in darkness or shadows that your enemies can't see through, then you can't be seen clearly. If even one enemy can see you clearly, you may assume that you can't hide from any of them (under most circumstances).

In order to successfully hide, you need to make a Stealth skill check against a DC equal to the highest passive Perception amongst the enemies. When you announce your attempt to hide, I'll find that DC for you before you roll.

If you are successful in your Stealth check, you will gain the status of Hidden. Characters with this status gain advantage when making an attack and grant disadvantage to their enemies' attacks against them.

Your Hidden status ends when any of the following things happen:

• You choose to stop hiding (as a free action)
• You make an attack (hit or miss)
• You take the Dash action
• You make any kind of loud noise or bright light or any other thing might reasonably make an enemy want to look in your direction (like triggering a noise-trap).

Note that I have removed the assumption that a creature will see you in combat when you "come out of hiding and approach" (PHB p.177) and replaced that restriction with the No Dash restriction.