Eiyuden Chronicle: Rising

All of the exploration achievements are extremely simple. The map shows a percentage tracking how much you've explored, and each room shows how many exits and their appoximate locations so you'll know if there is one in the upper/middle/bottom and which side, etc. Once you step foot into every screen of each area, the corresponding achievement will unlock. Some of the maps won't fully become available until later in the game due to story progression, or requiring a rune to destroy one of the elemental pillars.