Etrian Odyssey Untold: The Millennium Girl

Once you beat the game and view the credits, you can return to the title screen. In the Album accessible from there, you can now go to the "BGM" and "Voices" menus, which allow you to listen to all of the background music and vocals of the game.

For reaching certain milestones throughout the game, you will get certain medals appended to your Guild Card. Note that some of these will replace older ones as your achievements become greater.

After beating the game and viewing the credits, the "New Game" option at the title screen will have a star appended to its left. This signifies that the New Game+ option has been activated: when you restart the game, you are able to bring along your guild members, Grimoire stones, money, items, item shop unlockables, your almanac, and maps to the new game, each at your discretion.

Normally during the game, your level maxes out at Level 70, thereby limiting how powerful you can become because you will no longer gain EXP. or gain levels after that point. However, by completing certain quests from the Golden Deer Pub, you can raise the level cap by ten levels per quest, as below. (If you are unsusre as to whether you've already done these, a crown marking will be appended beside the level of characters who have their level cap raised above 70, one per each increase. Additionally, take note that the overall max level is Level 99, reached for finishing all three quests.)

Normally during the game, you cannot progress into B26F to B29F of the Labyrinth in Story Mode. Once you beat the game on B30F of the Labyrinth and view the credits, do not opt to start a new game at the title screen. Instead, opt to Continue your game: after leaving the inn, you will be notified that these four extra floors are now open to you. In addition, you will have Kupala back in the guild house and the Yggdrasil Core will not be weakened on B30F when you fight it again by any of the means used the first time. You can access the staircase to B26F on B25F: there, examine the Geomagnetic Pole. Once the Pole disappears, stand where it was, face south, and press A to find the hidden stairs.