Hurgar, turn 52:Hurgar bursts through the door on his first move, flooding the corridor with the stench of dried blood as he reveals a room that speaks of a hideous history. Its only inhabitant is a single undead servant, its zombie-like movements weaker than one expects from its sort: Baron Martense's power over the thing is waning, but still very present.

However, as Hurgar steps into the room, the tile beneath his feet sinks with a condemning click, and stones grind in the walls nearby...

THOOM! The heroes are trapped, and the hall fills with horrible moans!
Hurgar still has movement and one action. What will he do?