We made two big mistakes last time, which might explain a couple of “WTF?” moments for the close reader of Session #1.
First, clerics can’t cast Concussion. We have no idea how that slipped in there.
Second, shields do not provide DR, which means The KotBO should have changed his name to “Gimpy” after the troll bit his foot off. This appears to be a mis-reading of the table with shield stats from the basic book.
Our rule, though, is to play it as it lays, so the results still stand. The goblins were stunned, The KotBO still has his foot… but now we know better.
Then WHAT, exactly, do shields DO?
According to B287, they add their defensive bonus to all active defenses against melee or muscle-powered weapons from the front or shield side. They also allow a Block, shield bash, or shield rush. The last two are particularly attractive with heavier shields.