I am stunned! Arien's ridiculous armor class, coupled with his shield that's supposed to make him nigh-unhittable to missile attacks,
HAS ACTUALLY WORKED!

Now, I am truly scared... I wonder if the DM has some sort of cursed exploding ballista bolt prepped and ready to fire down a narrow corridor...
Note to self: stop giving the DM ideas.
Ahem.
Nice combat scene... the exploding table and (actually effective) grease spell were nice touches.