Here is the full list of all 52 Millennium - there are A New Hope achievements.
20+ secret rooms found
More than 100 Orbs collected
Kill all animal kings
Kill Rat King
All quests completed
Kill Lord of the Roots
Kill Lord of the Ants
Kill 50+ enemies with Hirado
Kill Crocodile King
5+ Guts from Marine
Kill Golem King
Kill Queen Bee
Find the secret forge
Kill Twin Tigers
Kill Bear King
Hard Mode Completed
10+ uses of Marine's Talk
Djinn Slain
Summon Jeanne 50+ times
Held more than 30 000 Gold
500+ Kills for Karine
Spend 20+ hours on the game
Rogue Slain
1000+ Fights
Use Benoit's hand technics 50+ times
Find 5+ secret rooms
Find 1+ secret room
Complete 6+ quests
50+ items found
Save 100+ times
500+ Kills for Marine
Use Benoit's hand technics 5+ times
Play 1+ hour
Complete 1 quest
Kill 100+ enemies with Marine
Use Jeanne for the first time
Collect 10+ orbs
Kill 10+ enemies with Marine
Find 5+ items
Finish the game in less than 10 hours in Hard Mode
30+ quests for Hirado
Karine Baroness Promotion
All secret rooms found
10+ changes of strategy
5+ successful uses of Karine's Craft
Discover all Bokden's locations
Complete the game fully (all quests, secret rooms and animal kings)
Use Benoit's hand technics 200 times
Never use "Go Through" until the end of the game