Here is the full list of all 29 MLB The Show 18 trophies - there are 14 bronze, 8 silver, 6 gold and 1 platinum.
In Road To The Show, get called up to the MLB® while in the managers office.
Hit a triple. (This trophy is not awarded if completed in a local multiplayer game, practice mode, or by switching teams.)
While batting, accidentally break your bat.
Sign with an agent in Road To The Show.
Draft a prospect in the First-Year Player Draft in Franchise mode. (The trophy is not awarded if the Franchise Option: Drafting is set to Auto or if Auto Draft is used)
Manually make a trade with any team in Franchise mode.
Equip any sponsorship in Franchise mode.
While in Road To The Show, on a AA team, participate in a post game interview after being named the Player Of The Game.
Discover the newest member to join the MLB® The Show™ 18 broadcast booth. (This trophy is not awarded in CPU vs. CPU games or if managing a full game in Franchise mode.)
While batting, perform a sacrifice bunt to advance a baserunner safely. (This trophy is not awarded if completed in a local multiplayer game or by switching teams.)
Create a custom play in practice mode.
Create or edit a batting stance in the new editor.
Download any item from the Vault.
Hit 5 or more total home runs with one team in a single game. (This trophy is not awarded if completed in a local multiplayer game or by switching teams.)
Obtain 10 or more hits in a single game. (This trophy is not awarded if completed in a local multiplayer game or by switching teams.)
In a half inning, strikeout 3 batters in a row. (This trophy is not awarded if completed in a local multiplayer game, practice mode, or by switching teams.)
With Pitch Feedback option ON, obtain "Good" pitch timing with the Pulse, Meter, or Pure Analog pitching interface.
Earn all of The Show™ 18 Trophies.
Win a 9-inning game without committing any errors. (This trophy is not awarded if completed in a local multiplayer game, switching teams, or by fast forwarding.)
Hit a grand slam. (This trophy is not awarded if completed in a local multiplayer game, practice mode, or by switching teams.)
Hit a single, double, triple and a home run with one player in a single game. (This trophy is not awarded if completed in a local multiplayer game, practice mode, or by switching teams.)
Accidentally give up a home run to Aaron Judge. (This trophy is not awarded if completed in a local multiplayer game or by switching teams.)
In Road To The Show, get praise from your pitching coach on your first win as a MLB® pitcher.
While in Road To The Show, participate in a post game interview after your first MLB® home run.
Make a diving catch for an out. (This trophy is not awarded if fielding is set to auto.)
While batting, reach base on an intentional walk. (This trophy is not awarded if completed in a local multiplayer game or by switching teams.)
Complete a full 9-inning game using two Legends teams without fast forwarding. (This trophy is not awarded in CPU vs. CPU games.)
Complete a Retro mode game in Franchise without fast forwarding.
In Road To The Show, while in the MLB®, fly in a plane to your next game.