Here is the full list of all 47 TEKKEN 8 achievements.
Reached the lowest area of the Ortiz Farm stage. (Excluding offline player battles)
Play a total of 10 online battles of any kind.
Won a Player Match.
Finished Chapter 15 of The Dark Awakens with Kazuya Mishima victorious.
Fought against your own Ghost.
Defeated Harada_TEKKEN in Super Ghost Battle.
Finished Arcade Quest.
Got promoted to Vanquisher.
Won the Arcade Quest Kobushi Dojo Tournament.
Performed 10 Heat Dashes. (Excluding offline player battles)
Performed a Wall Bound. (Excluding offline player battles)
Got promoted to Warrior.
Performed a Hard Wall Break. (Excluding offline player battles)
Got promoted to Brawler.
Performed a Wall Blast. (Excluding offline player battles)
Won a Ranked Match.
Finished Arcade Battle.
Achieved a great victory. (Excluding offline player battles)
Saved a custom character in Character Customization.
Obtained an overall total of 10,000,000G.
Finished Chapter 15 of The Dark Awakens with Jin Kazama victorious.
Performed a Floor Blast. (Excluding offline player battles)
Finished Chapter 12 of The Dark Awakens.
Dealt 20 Rage Arts. (Excluding offline player battles)
Achieved a 30-hit chain during Operation Rebellion in The Dark Awakens.
Finished Chapter 7 of The Dark Awakens.
Dealt 20 Heat Smashes. (Excluding offline player battles)
Dealt an overall total of 1000 damage while in rage mode. (Excluding offline player battles)
Healed an overall total of 500 damage in recoverable health. (Excluding offline player battles)
Triggered 10 Tornados. (Excluding offline player battles)
Dealt 70+ damage in an air combo. (Excluding offline player battles)
Finished Chapter 1 of The Dark Awakens.
Completed 5 Combo Challenges.
Dealt 2000 damage in Practice mode.
Activated Heat 5 times with a Heat Engager. (Excluding offline player battles)
Won the Arcade Quest Gong Tournament.
Achieved a perfect victory. (Excluding offline player battles)
Performed 5 Heat Bursts. (Excluding offline player battles)
Performed a Hard Floor Break. (Excluding offline player battles)
Won a Group Match.
Performed 20 Devilish hits in Tekken Ball. (Excluding offline player battles)
Finished 5 Character Episode stories.
Finished 10 Character Episode stories.
Defeated a player's Ghost.
Defeated 10 CPU Ghosts in Super Ghost Battle.
Practiced with the tips on in Replays & Tips.
Unlocked all achievements.