Here is the full list of all 33 Giraffe and Annika (JP) trophies - there are 20 bronze, 7 silver, 5 gold and 1 platinum.
Unlocked all Trophies
Cleared every hard rhythm game on S rank
Cleared every rhythm game with no misses
Obtained all bonus drawings from rhythm games
Cleared all rhythm games on hard mode
Cleared all rhythm games on all difficulties at A & up
Obtained 3 bonus drawings from rhythm games
Cleared all rhythm games on normal mode or higher
Beat the game within 4.5 hours
Cleared dungeon 5
Saw every conversation with Mrs. Save
Collected every mysterious paper scrap
Collected all meowsterpieces
Hit every drum
Stuck your face into every photo stand-in
Cleared dungeon 4
Collected 24 meowsterpieces
Changed into the swimsuit
Delivered something Giraffe forgot
Sang all of the songs
Took 50 or more photos
Cleared the Fire Dungeon
Collected 18 meowsterpieces
Collected 12 meowsterpieces
Cleared the Ocean Dungeon
Collected 6 meowsterpieces
Saw the special idle animation
Cleared the Forest Dungeon
Went into the bathroom 5 times
Drew an 'Amazing Fortune' result
Obtained the bag
Obtained the key to Lisa's house