shadowoflameth
Adventurer
The higher you go, the more monsters use attacks that don't rely on weapon to hits. Spells auras, things with saves. I DM's an epic game where the big bad, a half dragon Hypereon made every save. The players failed every save and still one. Players are supposed to win usually. Just remember really high AC = not as good at something else. Like the Berzerker I played with an epic boon that left him with a 24 Con and a high AC. Wisdom? Not so much.