It does have permanent world state changes, but it's nowhere near as extreme about it as capital L Legacy games.
It doesn't throw in rule changes the way the actual Legacy games do. Also, anecdotally, there's about 200 hours worth of play time in a single party running through the campaign, so the chances of anyone actually exhausting the game are slim. There's also a replay mechanic and a random dungeon mechanic, so you're not totally locked in.
It doesn't throw in rule changes the way the actual Legacy games do. Also, anecdotally, there's about 200 hours worth of play time in a single party running through the campaign, so the chances of anyone actually exhausting the game are slim. There's also a replay mechanic and a random dungeon mechanic, so you're not totally locked in.