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