Eustacio's fireball hit a good chunk of baddies, but no one was killed. Tanstafaal blocked the staircase dealing some damage to the nearby marauders in the meantime.
I'm assuming She-ha readied an action to rip the ropes of Gauco as soon as he arrive, and that's now. The rope can be ripped by mundane means, it forbids a caster to cast spells when in contact with his/her skin, but apart from that it's normal.

The thankful Gauco says:
"Leave Gwen and Andros to me, I can take them out of the fray with a dimension step."

The duergars move, but do nothing else. The big duergar, Hogar Garoth (the one wielding a greatsword) jumps and you, Andros, can feel that he's just by your side*.



*I'm considering you have to use a separate move action to jump (not jumping as part of a move, like in a straigh line, but like in this case, jumping from a higher ground to below). So Hogar won't be able to do his standard (which doesn't mean he coudn't do his swift, you just couldn't tell if he did or didn't).

Initiative order:
1Tanstafaal
2 Marauder Duergars and the leader

3 Eustacio
4 Loko and She-ha
5 Banther the Ranger

6 Marauders Wild Elves
7 Marauders Tiefling Conjurers

8 Gauco, the crazy destroyer
9 Marauders Goliaths
10 Marauders Human Swashbucklers

11 Andros
12 Gwen (delayed)

13 Marauders Drow Paladins of Slaughter