Here is the full list of all 44 FIFA 18 achievements worth 1,000 gamerscore. It takes around 60-80 hours to unlock all of the achievements on Xbox One.
Complete 20 Squad Building Challenges in FIFA Ultimate Team
In career mode, compete for the same player with other teams, and win the negotiation war
Buy a player by paying his release clause
Play 20 games in any game mode within FIFA Ultimate Team
Sell a player and negotiate a Sell-On Clause with the buying club
Secure a player on the first try.
Win a penalty shoot-out without missing
Perform 3 successful threaded through ball passes with the same player in the attacking third
Win Division Title in Online Head to Head Seasons (must be obtained through game-play)
Win a game in FIFA Ultimate Team Squad Battles
Score a goal after 10 consecutive passes in the opposing third of the pitch
Score a goal from a counter attack that started with a goalkeeper driven throw
Finish The Journey
Achieve a 10 partnership rating with your striker partner
Win the EFL Cup in The Journey
Complete a Weekly Objective in FIFA Ultimate Team
Successfully dribble an opponent by using The Bridge
Complete a Squad Building Challenge Group in FIFA Ultimate Team
Assist a goal using a threaded through pass
Complete a multiplayer skill game
Win a division title in FIFA Ultimate Team Seasons
Complete an entire day's Daily Objectives in FIFA Ultimate Team
Complete your first Squad Building Challenge in FIFA Ultimate Team
In the journey, add a cosmetic item to Alex Hunter
Win the Women's International Cup tournament
Challenge and complete a match against the Team of the Week in FIFA Ultimate Team
Complete a Daily Objective in FIFA Ultimate Team
Score a goal by tricking the keeper with a Fake Shot
Score 5 goals in a women's football match
Score a goal with a Flair Shot in a women's football match
Finish an Online Friendlies Season
Score a goal from a High Cross
During open play, score a long-distance goal with a defender (25 yards out)
Play a women's football match
Spend a skill point in Pro Clubs
Unlock all traits in one skill-tree path
Score a goal with a downward header
Score a goal using a low shot
Perform a quicksub after you concede a goal
Win promotion to Division 1 of FIFA Ultimate Team Seasons
Complete and win your first Pro Club Seasons league match
In Pro Clubs, use in matches each of your 3 Play Styles
Score by performing an outside of the foot free kick
Win all 4 matches in a FUT Draft session in FIFA Ultimate Team