OMD2 - Skull Collector - Twisted Halls

Orcs Must Die! 2 - The Skull Collector

Facing Twisted Halls, with not a single skull spent in the Spell Book... Is the Skull Collector up to the challenge ? How many trophies shall be gathered ?

Check out the Challenge on the forums !
http://forums.robotentertainment.com/showthread.php?41-The-Skull-Collector-Challenge