Alternate costumes:To unlock the Foreign Set 1 (white), Foreign Set 2 (green), Foreign Set 3 (forest camo), and Foreign Set 4 (winter camo and red) costumes, complete the game on Normal difficulty.To unlock the Modern Army costume, complete all 50 missions on the Hard difficulty setting with a Ninja 5 rank.Special Costumes:To unlock the Special Costumes, which include the Lion Costume (face), Hotdog (sheath), and Kite and Flag (accessory), kill 50 Tomikichi.Lurk and Feet abilities:To unlock the Lurk and Feet abilities, get 1,000 Stealth Kills.JVictory celebration:To perform a victory celebration after completing a mission, hold D-pad Up, Down, Left, or Right before the “Mission Completed” screen appears.Upgrading abilities:You will get an ability to boost your main abilities by 20 after defeating the Boss in the Daylight Battle On Deck mission.Achievements:ACHIEVEMENT – HOW TO UNLOCKComplete 5 Missions (20 points) – Complete 5 missions.Complete 10 Missions (20 points) – Complete 10 missions.Complete 20 Missions (30 points) – Complete 20 missions.Complete 30 Missions (30 points) – Complete 30 missions.Complete 40 Missions (40 points) – Complete 40 missions.Complete 50 Missions (50 points) – Complete 50 missions.20 Stealth Kills (20 points) – Defeat 20 enemies with Stealth Kills.50 Stealth Kills (20 points) – Defeat 50 enemies with Stealth Kills.100 Stealth Kills (30 points) – Defeat 100 enemies with Stealth Kills.300 Stealth Kills (30 points) – Defeat 300 enemies with Stealth Kills.500 Stealth Kills (30 points) – Defeat 500 enemies with Stealth Kills.700 Stealth Kills (40 points) – Defeat 700 enemies with Stealth Kills.1000 Stealth Kills (50 points) – Defeat 1,000 enemies with Stealth Kills.10 Ninja 5 ranks (20 points) – Complete 10 missions with Ninja 5 rank.30 Ninja 5 ranks (20 points) – Complete 30 missions with Ninja 5 rank.50 Ninja 5 ranks (30 points) – Complete 50 missions with Ninja 5 rank.Ninja 5 All Easy Missions (30 points) – Complete all easy missions with Ninja 5 rank.Ninja 5 All Normal Missions (40 points) – Complete all normal missions with Ninja 5 rank.Ninja 5 All Hard Missions (50 points) – Complete all hard missions with Ninja 5 rank.Complete the game story (50 points) – Complete Story mode. Completed 1 Secret Mission (20 points) – Completed 1 Secret Mission.Completed 2 Secret Mission (20 points) – Completed 2 Secret Mission.Completed 3 Secret Mission (30 points) – Completed 3 Secret Mission.Completed 4 Secret Mission (40 points) – Completed 4 Secret Mission.Completed 5 Secret Mission (50 points) – Completed 5 Secret Mission.Killed 5 Tomikichi (20 points) – Killed 5 Tomikichi.Killed 10 Tomikichi (20 points) – Killed 10 Tomikichi.Killed 20 Tomikichi (30 points) – Killed 20 Tomikichi.Killed 30 Tomikichi (30 points) – Killed 30 Tomikichi.Killed 40 Tomikichi (40 points) – Killed 40 Tomikichi.Killed 50 Tomikichi (50 points) – Killed 50 Tomikichi.