Move - Move one square over to E6, and then straight down to I6, moving through Dunor's square to J7, and then finally to J8 (I have speed 7). This will provoke an OA from the demon at some point, but if it takes the OA Dunor gets to stab it with Riposte Strike - no Sneak attack though, sorry.
Standard - Evasive Strike on the wererat, shifting to the east off of the map to effectively J13. That should put me out of reach of the wererat and with four of the hallway pillars around me to the Northwest, Northeast, Southwest, Southeast. I will assume the wererat has cover from the pillar to Galadren's northwest, and that with Bhu's position at I5 his sunrod is lighting up the hallway.
Evasive Strike vs. Wererat (-2 Cover)
To-Hit:
Rolled 1d20+7 : 13 + 7, total 20
Damage:
Rolled 2d10+5 : 5, 6 + 5, total 16
Effect: Galadren shifts 5 squares before the attack (From J8 to J13)
Elven Accuracy (if the attack misses)
To-Hit:
Rolled 1d20+7 : 18 + 7, total 25
Minor: Magic Item - Quickshot Crossbow
Effect: Galadren makes a ranged basic attack
Ranged Basic Attack vs. Wererat (-2 Cover)
To-Hit:
Rolled 1d20+7 : 11 + 7, total 18
Damage:
Rolled 1d10+5 : 3 + 5, total 8