Here is the full list of all 50 Tekken Tag Tournament 2 achievements worth 1,000 gamerscore.
You earned everything.
You earned 1st dan in Online Mode.
You unlocked all the content in Fight Lab.
You switched places with your partner 765 times.
You became Tekken Lord in Offline Mode.
You earned Vanquisher in Offline Mode.
You won a ranked match in Online Mode.
You pulled off 3 10 hit combos.
You unlocked 40 characters' ending movies.
You cleared Stage 5 in Fight Lab.
You pulled off a GREAT combo.
You pulled off 10 Tag Combos.
You escaped from Alisa's Spam Bomb move.
You pulled off 3 Direct Tag Assaults.
You pulled off 3 Tag Crashes.
You dropped a damsel into the pool in the Eternal Paradise stage.
You pulled off 10 Tag Assaults.
You won 10 consecutive battles in Survival in Offline Mode.
You pulled off 3 reversals.
You cleared an Offline Mode arcade battle solo.
You cleared Offline Mode Time Attack within 20 minutes.
You earned over 10,000,000G total.
You changed the background music using TEKKEN TUNES.
You won 3 team battles in Offline Mode.
You earned 3 Lucky Boxes.
You won a PERFECT battle.
You cleared Stage 4 in Fight Lab.
You cleared Stage 3 in Fight Lab.
You cleared Stage 2 in Fight Lab.
You cleared Stage 1 in Fight Lab.
You successfully completed 10 throw escapes.
You broke a wall.
You fought 3 times in Online Mode.
You won a GREAT battle.
You won a player match in Online Mode.
You dealt a total of 1000 damage in Practice in Offline Mode.
You used an item move.
You defeated 30 ghosts.
You cleared an Offline Mode arcade battle with a partner.
You broke a floor.
You pulled off 3 low parries.
You pulled off 10 Tag Throws.
You pulled off 10 homing attacks.
Your upper body got wet in the Fallen Garden stage.
You pulled off 3 partner-specific Tag Throws.
You pulled off 10 bound combos.
You broke a balcony.
You customized a character.
You dealt more than 62 damage in a midair combo.
You pulled off 3 ukemi.