The explorer and old-school PC RPG fan's dream.
RPGs have different "focuses", the primary one is often the story and character development, which is a staple in most of today's best coming from Bioware and Square Enix. Combat, I find often best found in tactical RPGs in the vein of Disgeia, and Fire Emblem. I find that one other, the sense of being lost in a world, is sometimes cast aside, and takes far too small a roll in the game's progression. The focus on story makes the above mentioned dev's games often too linear, offering just a few side-quests, that don't add much flavour to the game, and certainly aren't of the same pedigree.
Etrian flips these two roles around. Exploration and fear of the unknown take the center stage, and story is mostly non-existent. It plays like what you'd expect an old-school dungeon RPG would. After leaving the main "town" menu hub, all gameplay in the dungeon is first person, and movement is made through single tiles, that are to be mostly manually mapped out on the bottom DS screen.
Creating a party, is also fun to explore on its own, as the game has 12 classes that each have very different strengths and weaknesses. Party members are created in a Guild Hall area, and can be easily named and popped into your group (which can hold up to a maximum of 5). Every level, your characters will gain a training point, which can be used to boost stats, learn new abilities, or improve them. And, like many other classic RPGs, parties can be arranged into a front of back row, proving more protection for weaker, magic using classes.
All these elements make for a game that is very, very unforgiving, but incredibly rewarding. Once the primary rules of the dungeon are learned, and if you are persistent enough to deal with the early challenge, Etrian Odyssey 2 becomes a game experience that can be found nowhere else.