@Cu Chulainn Considering Mirdas is next to Callie, who is in the center, and it is a ten foot square, and it is difficult terrain. You would be using half of your movement to stand up. Without a dash, you’d move half of 15. Rounded down would be 7 feet. So, without a dash, Mirdas would not be able to get out of the greased area.
It is also worthwhile to note they might have randomly generated hit points within a range, so I would not trust being so sure on what does or does not happen unless the Dungeon Master confirms one way or another, but that is just my experience on and throughout the game.
Also, a DM's job is to make sure the challenge is fair, which might involve increasing base hit points. I suggest simply not looking at the Monster Manual. Saves a lot of issues for the DM.
Considering a bandit's default health is 11, would a damage roll of 9 leave the bandit who attached Jacoby ready to keel over at the lightest touch?
Unless he is using the base stats for bandit captain, or a thug, or a veteran, or even a death slaad. Toss aside yonder metagaming and... uhhh... listen to your heart?
@Guardian Angel Haruki If Safira attacks with her scimitar Bernie for her action using her dueling /+2 to damage rolls/ for not weilding a second weapon, can she after that use her bonus to take her crossbow with her offhand and shoot at one of the other Bs?
@Guardian Angel Haruki I think I mixed it up with the two-weapon fighting with light weapons thingy I think with that you can attack as an action and attack as a bonus with your offhand without adding your mod to the damage of the attack