Here is the full list of all 32 Rogue Explorer achievements.
Explore once from the "Guild".
Clear the explore of "Tutorial".
Clear the explore of "Grassland".
Clear the explore of "Mine Tunnel".
Clear the explore of "Abandoned Town".
Clear the explore of "Forest".
Clear the explore of "Graveyard".
Clear the explore of "Autumn Fields".
Clear the explore of "Ruins".
Clear the explore of "Rocky Area".
Clear the explore of "Snow Fields".
Clear the explore of "Mechanical Area".
Clear the explore of "Library of Wisdom".
Clear the explore of "The End".
Open 1 treasure box.
Open 10 treasure boxes.
Open 100 treasure boxes.
Beat 5 Enemies.
Beat 100 Enemies.
Beat 1000 Enemies.
Beat a boss.
Beat 10 bosses.
Beat 100 bosses.
Get 1 material.
Get 50 materials.
Get 100 materials.
Merge a equipment once.
Merge equipment 10 times.
Enhance a equipment once.
Enhance equipment 100 times.
Craft a equipment once.
Craft equipment 10 times.