Hi, I'm from the 300 LS:

http://i7.minus.com/iYiS0EZ0OEfYe.png

http://i7.minus.com/iusrzaQnf7yPE.png

No achievement for exploring turn 4, so this is the best we got for proof. Perhaps loot as well when lodestone updates (Boots for Nana Banana, Ring for Fire Slay)