Here is the full list of all 49 Yakuza 4 trophies - there are 38 bronze, 7 silver, 3 gold and 1 platinum.
Acquire all trophies in the game.
Clear Extra Hard Mode.
Clear all Ultimate Skill missions.
Clear Normal Mode without reverting to Easy Mode.
Clear the Finale.
Defeat Amon and get through all the substories.
Create one or more weapons for each weapon category.
Collect ten emblems from survivors during gang encounters.
Destroy 100 weapons you pick up playing as Kiryu.
Receive business cards from all hostesses, including ones you train in "Hostess Maker."
Max out all characters to level 20.
Order something at least once at each restaurant.
Obtain the trophy prize in pachinko.
Golf and fish five times each.
Play all non-casino gambling games.
Acquire the title "Star of the Coliseum."
Purchase five hand guns playing as Saejima.
Possess 10,000,000 yen or more.
Gather at least one outfit from each category in "Hostess Maker."
Earn 1,000,000 yen playing as Akiyama.
Play all casino gambling games.
Collect all Memos in the Pause Menu.
Clear Part 4 of the story.
Achieve a promotion in shogi.
Traverse 100 kilometers or more.
Sing all songs at karaoke.
Knock over 100 people you pass by.
Clear Part 3 of the story.
Complete or finish forty substories.
Have a hostess wear a present you give her.
Have a hostess invite you on an after-work date.
Acquire 10,000 casino points playing as Tanimura.
Collect two of each different tile pattern in mahjong.
Clear Part 2 of the story.
Have one of your apprentices win the Rookie Tournament in "Fighter Maker."
Complete or finish twenty substories.
Pick up 20 pieces of trash around the city.
Clear Part 1 of the story.
Acquire three Revelations.
Smash the ball three times in one match.
Play all minigames at Club SEGA.
Achieve a turkey in bowling.
Open five coin lockers.
Become a VIP member at the massage parlor.
Complete or finish four substories.
Achieve a hat trick in darts.
Successfully hit two panels at once at the batting center.
Win the first point in Four-Ball pool.
View all Reminiscences from YAKUZA to YAKUZA 3.