Here is the full list of all 58 Dragon Spirits achievements.
Start a new game
Ride Tungsteel to the Dragon Spirit Academy
Contract Raven, as if the fate brought you together
Gather a full team of 4 Dragon Spirits, though they may fall into oblivion in the end
Set up a secret base, a must-have for a juvenile story
Pass the mid-term
Make a decision in the secret base's meeting
Finish the training on the Heaven Plume Bridge
Pass the final exam
Contract 50 Dragon Spirits
Contract 100 Dragon Spirits
Contract 150 Dragon Spirits, remember that there are total of 153 Dragon Spirits in the game
You meet with Mr. Lui when you skip class, he has been using A* pathfinding
Defeat Mr.Lui, continue your loitering
Defeated by Mr.Lui, time to back to school
Defeat Mr.Lui with only one Dragon Spirit in your team, teaching is not for the weak
Obtain Mr.Lui's Debt Note, what kind of teacher would own student money?
Steal what is in Tan Yathin's locker
Find and defeat Tan Yathin with only one Dragon Spirit in your team
Max out Tan Yathin's friendship, now Mr.Lui will conjure more gossip
Max out We Young's friendship, as a friend as a foe
Max out Lui Chesion's friendship, this relationship is more complicated than necessary
You have borrowed some crystal shards from Tan Yathin. You can legally refuse to pay them back if the interests are too high
Lend some crystal shards to We Young, you are on the other side of debt this time
Successfully asked for crystal shards from Mr.Lui,earning through matches might be faster than this
Achieve an instant defeat
Repel the opponent's CP to 0 with one hit
Fail 10 battles
Win 20 rounds of battles in a row in the Dragon Spirit Academy's practice room
Win 20 rounds of battles in a row in the Gleam Coast avenue
Win the Double Dragon City Gourmet Contest
Win 10 rounds of battles in a row in the Evernight City Unlimited Firepower Battles
Pass the Golden Wave Spooky Trip with minimum visibility
Achieve 80,000 in Sandy's "Your best direct damage" and 12,000 in "All you can deal indirect damage"
Win 12 rounds of battles in a row in the Aureate Gold Mine Arena
Finish all Verdant Plain's mazes
Get 5 Marks of Victory at once in the Fall Breeze Plain's time attack
Hold more than 10,000 crystal shards, you must be that rich kid in your class
Hold more than 100,000 crystal shards, these should be enough to purchase a real estate
Hold more than 1,000,000 crystal shards, did you seriously grind this much?
Hold 30 types of "Common" items in your inventory
Hold 30 types of "Food" items in your inventory
Hold 50 types of "Trinket" items in your inventory
Finish all the side quests in "Academy Stuff"
Finish all the side quests in "Exploring the Islands Ⅰ"
Finish all the side quests in "Exploring the Islands Ⅱ"
Finish all the side quests in "The River of History"
Contract Ghira
Contract Nekra
Contract Andes
Defeat shadow Chang Junwai
Defeat Ling Yu's shadow
Defeat Ling Zing's shadow
Defeat Leung Shu's shadow
Defeat Hsia Minsh's shadow
Defeat Linann's shadow
Defeat Tan Yathin on the Metapolis' Shuttle, cross-dressing is beyond me
Defeat We Young on the Metapolis' Shuttle, he might be plotting to drag everyone Down to Inferno