Etrian Odyssey happened in 2007.

Etrian Odyssey was created on 2007-01-18.

Yes you have to unlock them. The samurai is on the Azure Rainforest somewhere and the hexcaster is on the Sandy Barrens level somewhere.

To get past the White and Violet crystals, you need the appropriate keys.

The White key can be found on B7F

The Violet key can be found on B13F.

You need to mine some Andradite from any of the Mining gather points on the first stratum. It is a rare find, so you may have to revisit the gather points on different days, before you find one.