A new mission, costumes and weapons and other good stuff await you in Dungeon Defenders' "Halloween Spooktacular" downloadable extension, available for free now but only on PC.

The Spooktacular offers eight costumes and weapons, a Halloween-decorated tavern and a Halloween-themed challenge mission. But as of yet, no plans to offer this over PlayStation Network or Xbox Live, paid or otherwise. Probably has something to do with last minute approvals.

Dungeon Defenders Halloween Packs [Steam]