Here is the full list of all 40 Chronicles of 2 Heroes achievements worth 1,000 gamerscore.
Defeat Chiyome.
Defeat Nobumasa.
Defeat Ishi no Senshi.
Defeat Gashadokuro.
Defeat Tsuchigumo.
Defeat Tengu.
Defeat Amaterasu.
Defeat Susanoo.
Unlock "Tenshi's Blessing".
Unlock "Crimson dive".
Unlock "Piercing strike".
Unlock "Airborne Riposte".
Unlock "Raijin Riposte".
Unlock "Arsenal overload".
Unlock "Shinigami Slash".
Unlock "Dragon's Breath".
Unlock "Kami's Blessing".
Unlock ALL the extra skills.
Enter in all the temples.
Enjoy the "tea ceremony" one time.
Pet ALL cats.
Use a teleport inside a temple.
Complete the Boss Rush mode.
Complete the game without any extra skill.
Start a NewGame+.
Don't give the treasures and defeat Susanoo.
Give the treasures and join Susanoo.
Wait in front of Himiko and defeat the Master after he turns into Susanoo.
Defeat Susanoo when you first meet him.
Make 30 parries with Kensei.
Make 30 parries with Ayame.
Defeat 5 enemies with "Raijin Riposte".
Defeat 15 enemies with "Dragon's Breath".
Defeat a Burabura without attacking it.
Rescue all the cats.
Collect 1000 mon.
Collect 2000 mon.
See all endings of the game.
Defeat 10 enemies using ninja's bombs.
Collect 3000 mon.