Here is the full list of all 50 Street Fighter X Tekken achievements worth 1,000 gamerscore.
Unlock all Achievements.
Activate Cross Assault 500 times.
Finish a round with Cross Assault 300 times.
Connect with 500 Cross Arts.
Finish a round with a Cross Art 300 times.
Clear all of the missions in Mission mode.
Connect with 500 Super Arts.
Finish a round with a Super Art 300 times.
Activate Pandora 500 times.
Finish a round with Pandora 300 times.
Use a character in battle over 300 times.
Activate your Assist Gems 100 times.
Connect with 100 Quick Combos.
Connect with 500 Launchers.
Connect with 500 EX Special Moves.
View 50 replays in the Replay Channel.
Defeat 5 rival teams in Arcade mode on Medium difficulty or higher.
Defeat all of the bosses in Arcade mode on the hardest difficulty.
Clear Arcade mode on Medium difficulty or higher.
Have your replay downloaded 20 times in My Channel's Broadcast Mode.
Clear 300 trials in Trial mode.
Obtain 300 Titles.
Win a round without getting hit 100 times.
Fight 500 matches over Xbox LIVE.
Connect with 500 Special Moves.
Fight 300 matches over Xbox LIVE.
Win 100 matches over Xbox LIVE.
Clear all of the lessons in the Tutorial.
Use Arcade Fight Request 30 times.
Win 50 matches over Xbox LIVE.
Go into Training mode 10 times.
Clear one mission in Mission mode.
Get to C rank for the first time in Ranked Match.
Activate your Boost Gems 100 times.
Raise your battle class rank for the first time in Ranked Match.
Win in a Ranked Match.
Create 10 lobbies in Endless Battle.
Fight 100 matches over Xbox LIVE.
Fight 50 matches over Xbox LIVE.
Customize your player Title.
Win 10 matches over Xbox LIVE.
Win 5 matches over Xbox LIVE.
Win a match in Endless Battle.
Access the Store.
Customize your player comment.
Customize a character's color.
Customize a Gem Unit.
Clear ten trials in Trial mode.
Clear one trial in Trial mode.
Clear one lesson in the Tutorial.