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