Here is the full list of all 52 WWE 2K18 achievements.
MyCAREER - Complete the main story.
Use a custom Championship and win a match. (Single play)
WWE Universe - Play and win 50 matches.
WWE Universe - Cash in Money in the Bank at WrestleMania and win the Championship.
WWE Universe - Win the Royal Rumble and get a World title at WrestleMania.
WWE Universe - Play as Roman Reigns, beat Undertaker at WrestleMania.
WWE Universe - Win or defend the WWE Raw Women's Championship at WrestleMania.
Perform 3 major reversals in a Single Match. (PLAY mode against A.I.)
Escape an elimination attempt by 2 Superstars. (PLAY mode against A.I.)
Receive 3 rollout buffs during a Royal Rumble match. (PLAY mode against A.I.)
Perform a Hot Tag. (PLAY mode against A.I.)
MyCAREER - Complete your first match in RAW or SmackDown.
Eliminate all opponents in an Elimination Chamber match. (PLAY mode against A.I.)
Successfully pin a distracted opponent using a Leverage Pin. (PLAY mode against A.I.)
Throw an opponent out of the ring using Grapple Carry. (PLAY mode against A.I.)
Catch and carry a diving opponent. (PLAY mode against A.I.)
Slam your opponent onto the steel steps. (PLAY mode against A.I.)
Use all 4 carry positions in a single match. (PLAY mode against A.I.)
Attack your opponent using the Championship Title. (PLAY mode against A.I.)
MyCAREER - Reach level 2 on a career track.
MyCAREER - Complete one side quest.
Win a match as The Miz. (PLAY mode against A.I.)
Win a match as Daniel Bryan. (PLAY mode against A.I.)
Win a match as Karl Anderson. (PLAY mode against A.I.)
Win a match as Jinder Mahal. (PLAY mode against A.I.)
Win a match as Nia Jax. (PLAY mode against A.I.)
Win a match as Hideo Itami. (PLAY mode against A.I.)
Win a match as Bobby Roode. (PLAY mode against A.I.)
Win a match as Goldust. (PLAY mode against A.I.)
Win a match as Sasha Banks. (PLAY mode against A.I.)
Win a Normal One on One match in less than 60 seconds (PLAY mode against A.I.)
Slow your opponent by throwing something from the catering table. (PLAY mode against A.I.)
Successfully knock your opponent off their feet using an Equipment Box. (PLAY mode against A.I.)
Finish a match backstage. (PLAY mode against A.I.)
Perform a Car OMG! (PLAY mode against A.I.)
Perform a successful diving attack from the forklift. (PLAY mode against A.I.)
Make an opponent fall off the Trailer in the Parking Lot. (PLAY mode against A.I.)
MyCAREER - Complete the tutorial.
WWE Universe - Play and complete each match on a show's match-card.
Win a match as Braun Strowman. (PLAY mode against A.I.)
Win a match against Jericho. (PLAY mode against A.I.)
Win a match as Seth Rollins. (PLAY mode against A.I.)
Perform a Crowd or Opponent taunt. (PLAY mode against A.I.)
Earn all trophies.
MyCAREER - Complete 20 side quests.
MyCAREER - Reach level 10 on a career track.
ROAD TO GLORY - Win 100 matches.
ROAD TO GLORY - Qualify for a PPV Event.
ROAD TO GLORY - Win a Main Event.
ROAD TO GLORY - Complete 10 Challenges.
ROAD TO GLORY - Reach level 10 in Prospect.
Win a Team Up match.