@Mir I think you're supposed to blow up the floor underneath the relic with dynamite. The issue is that if you forgot to pick up more from the table in front of the first temple building. A pretty big design flaw in my opinion.

I killed the boss got the relic...stuck in that level am I missing something?

Exceptionally well-built map that oozes professionalism and such, wouldn't look out of place if it had been shipped alongside Gray Matter's Crypt and Dig levels. Feels and plays like a mix of the said two with both nazi and undead combat on offer and plenty of switches to look out for. Takes around 20 minutes to complete. Play this.