What happens first? His end of round ability, or scoring. We played it as they happen at the same time so the player with initiative chooses the order. Sorry if this has been asked
Vader and the shielded mission
When resolving timing conflicts, mission rules resolve first. If it there is still a conflict, the player with initiative resolves his effects first.
Timing, page 2.
Conflicts, page 9.
Outside of attacks in skirmish, for effects with the same trigger, mission rules are resolved first - if there are multiple such rules, the player with initiative decides the order, then the effects from the player with initiative, then the other player.