Full list of all 70 Ninja Gaiden II achievements worth 1,250 gamerscore. It takes around 80-100 hours to unlock all of the achievements in the base game.
The base game contains 60 achievements worth 1,000 Gamerscore, and there is 1 DLC pack containing 10 achievements worth 250 Gamerscore.
Completed the game using only the Lunar Staff.
Completed the game using only the Falcon's Talons.
Completed the game using only the Dragon's Claw and Tiger's Fang.
Completed the game using only the Kusari-gama.
Completed the game using only the Eclipse Scythe.
Completed the game using only the Tonfa.
Completed the game using only the Vigoorian Flail.
Finished walking the Path of the Master Ninja.
Finished walking the Path of the Mentor.
Completed the game using only the Dragon Sword.
Defeated 1000 enemies with Ultimate Techniques.
Successfully mastered the Reverse Wind technique.
Successfully mastered the Furious Wind technique.
Successfully mastered the Shadowless Footsteps technique.
Successfully mastered the Flying Swallow technique.
Successfully mastered the Flying Bird Flip technique.
Successfully mastered the Obliteration Technique.
Successfully mastered the Ultimate Technique.
Successfully mastered the Ultimate Guidance technique.
Successfully mastered the Counter Attack technique.
Successfully mastered the Unrivaled Soaring technique.
Successfully mastered the Invisible Path technique.
Successfully mastered the Art of the Inferno Ninpo.
Successfully mastered the Art of the Wind Blades Ninpo.
Successfully mastered the Art of the Flame Phoenix Ninpo.
Successfully mastered the Art of the Piercing Void Ninpo.
Defeated the Greater Fiend Alexei.
Defeated the Greater Fiend Volf.
Defeated the Greater Fiend Zedonius.
Defeated the Greater Fiend Elizébet.
Defeated Genshin, leader of the Black Spider Clan.
Finished walking the Path of the Acolyte.
Obtained 10 Crystal Skulls.
Obtained 20 Crystal Skulls.
Achieved a 100-hit combo.
Finished Chapter 1, "Sky City Tokyo."
Finished Chapter 2, "The Castle of the Dragon."
Finished Chapter 3, "Thunderclap of Catastrophe."
Finished Chapter 5, "The Aqua Capital."
Finished Chapter 7, "The Flying Fortress Daedalus."
Finished Chapter 9, "Heart of Darkness."
Annihilated Volf, the Greater Fiend of Storms.
Annihilated Zedonius, the Greater Fiend of Flame.
Annihilated Alexei, the Greater Fiend of Lightning.
Annihilated Elizébet, the Greater Fiend of Blood.
Annihilated the High Infernal Priest, Dagra Dai.
Freed Genshin's soul and ended the reign of the Black Spider Clan.
Finished walking the Path of the Warrior.
Obtained all of the Crystal Skulls.
Purified the site of the the ninth Test of Valor.
Purified the site of the the eighth Test of Valor.
Purified the site of the the seventh Test of Valor.
Purified the site of the the sixth Test of Valor.
Purified the site of the the fifth Test of Valor.
Purified the site of the the fourth Test of Valor.
Defeated 1000 enemies with Obliteration Techniques.
Purified the site of the the third Test of Valor.
Purified the site of the the second Test of Valor.
Chose to continue the game 100 times.
Purified the site of the the first Test of Valor.
Completed 4 Missions
Completed 8 Missions
Completed all Karma Attack Missions on Path of the Acolyte
Completed all Karma Attack Missions on Path of the Warrior
Completed all Karma Attack Missions on Path of the Mentor
Completed all Karma Attack Missions on Path of the Master Ninja
Obtained a Medallion in a Survival Mission
Obtained all Bronze Medallions in the Survival Missions
Obtained all Silver Medallions in the Survival Missions
Obtained all Gold Medallions in the Survival Missions