Here is the full list of all 43 Millennium 4 - there are Beyond Sunset achievements.
Held more than 99,000 Gold
1000+ fights
Defeat the Tyranosaurus
Kill more than 1000 enemies with Bokden
Kill 1000+ enemies with The Bear
Complete the game fully (all quests, secret rooms and animal kings)
Hard Mode Completed
Finish the game in less than 13 hours in Hard Mode
All quests completed
Register Old Suzuki (just in time!)
All secret rooms found
Complete Q9 (Find Jacque's Hair Potion)
Kill all animal kings
Kill Urchin Nation
Convince the Bear to join
Pass the Crystals trial
Kill 15+ groups of Tianas during the second trial
20+ secret rooms found
99+ hits with Bokden's Hands
Kill Shooking
Find 40+ XP baskets
150+ items found
Go through the Grand Rift
Recruit Bokden
Kill the King
Kill Perfect Chopper
Kill Legendary Warrior
Kill Kingdom of Weapons
Kill Soil of War
Spend 40+ hours on the game
Complete 6+ quests
Find 5+ secret rooms
Get 50+ Gold from a gold sack
Recruit Wolfgang
Kill Golem Overking
Play 1+ hour
Complete 1 quest
Kill Gorilla Lord
3+ hits with James' Hands
Find 1 secret room
400+ hits with Marine's hands
600+ hits with Salome's Hands
Reach lvl 6 in Bare Hands with Benoit