RPG on the Portal.

The connection with Smoke was unexpectedly cut off. All demons of the world! Something is not right. I need to go and see what's going on. (pulls up the hood, wraps himself in a cloak, puts on a mask of a tired mage).
Okay, I need to sneak into the besiegers' camp (raises two skeletons, sends them ahead, and carefully follows them towards the besiegers' camp).

The skeletons approach the fortress wall of the city of demons, and suddenly gnomes jump out from behind a building.
- Destroy this undead! one of the gnomes shouts, and his companions turn the skeletons into two neat little piles of bone dust with their hammers... The gnome says that there may be more undead nearby... and the squad begins to search the deserted streets of the outer city... here, on the outer fortress wall, you notice an elf leisurely walking with a bow at the ready... It seems that all the exits from the city are guarded... Patrols occasionally walk along the streets, keeping away from the citadel...
Your actions?