This was the only instance we did not manage to get +2 on the first try. Think we had like 8 minutes left.
The reason is pretty simple : pull strategy. We filled the 100% just after the first boss already. We found the spy in less than 30 seconds.
The timer is comparatively short measured compared to other instances.
But honestly leading to the Gerdo room there is not too much you can just skip from my view and in the Gerdo room we did just 1 pack next to a beacon plus rogue could poison his potion.
Is the key to finishing faster here to pull Gerdo with the beacon active to the right so you can skip that mob pack as well?
Should the 2nd boss be pulled with bodyguards to avoid clearing too much on the sides?
Edit: Also concerning Arcway the 100% filled up by doing just 2 bosses but it did not seem like there was much we could have skipped at all. We still had 12 minutes left on Arcway 3 despite killing trash worth 200% instead of 100%.
Is it expected to bring Invisibilty potions to Arcway to skip a lot of trash?
Also the doors were closed in a way that required us to make a full run back after 2 bosses.