ainatan said:
The Succubus worths 400 XP.
Do you think 4 level 1 characters could beat her?
I think it would be a certainity but it would be a very long, boring and protracted battle. Mainly due to the fact that she can't one shot any of the PCs into the ground and thus 4 actions versus her one gives the advantage to the PCs.
Imagine, initative goes Succubus, PC #1-4
Round 1, Succubus dominates a PC, forces PC #1 to use a daily on PC #2. On average, none of the dailies will outright kill another PC so PC #2 is still alive. Thus, on the PCs turn, as long as one of the actions is to heal PC #2, no PC will die outright from the Succubus' turn. This still leaves 3 actions for the PCs to use on wailing on the Succubus.
Even with her defenses, on average, a 17 or higher roll will succeed thus even if she has a healing surge, the Succubus can't kill the PCs before the PCs do her in. I personally would never run such a battle for the players as what you will have is many rounds of combat where nobody hits and you get into a situation where the battle quickly become rote.
EDIT: I didn't optimize the Succubus but it fact, it makes the battle even more protracted but doesn't change the outcome even with her charming one