Here is the full list of all 85 Slime-san achievements.
Complete a speedrun of Sheep's Sequel.
Beat the special sheeple level in NG+.
Beat all core sheeple levels in NG+.
Beat the special sheeple level.
Beat all remix level trophy times.
Get the high score in Sheepleman 64.
Get a high score in all 5 music game tracks.
Purchase all gallery sets.
Beat all remix levels.
Beat all core sheeple level trophy times.
Beat all core sheeple levels.
Collect all bugs in core sheeple levels.
Purchase half of the gallery.
Talk to both hidden indie stars.
Buy out the entire carpenter shop.
Beat level 26 in NG+.
Beat level 26.
Beat the scary dojo challenges 1 to 5.
Beat the scary dojo challenges 1 to 10.
Beat levels 21 to 25 in NG+.
Beat levels 16 to 20 in NG+.
Beat levels 11 to 15 in NG+.
Beat levels 6 to 10 in NG+.
Beat levels 1 to 5 in NG+.
Buy 10 items in the carpenter shop.
Beat levels 21 to 25.
Beat levels 16 to 20.
Beat levels 11 to 15.
Beat levels 6 to 10.
Beat levels 1 to 5.
Speedrun the entire 25 levels once!
Go through the tutorial levels once.
Beat all normal and NG+ levels, collect all the Apples and beat all the Trophy times in the game.
Beat all the achievements in Slime-san!
Listen to one track on any jukebox.
Beat a Boss Rush Mode!
Beat a Speed Running Mode!
Beat all New Game PLUS levels in World 5.
Beat all normal and NG+ levels, collect all the Apples and beat all the Trophy times in World 5.
Beat all New Game PLUS levels in the game.
Beat all New Game PLUS levels in World 4.
Beat all normal and NG+ levels, collect all the Apples and beat all the Trophy times in World 4.
Beat all New Game PLUS levels in World 3.
Beat all normal and NG+ levels, collect all the Apples and beat all the Trophy times in World 3.
Beat all New Game PLUS levels in World 2.
Beat all normal and NG+ levels, collect all the Apples and beat all the Trophy times in World 2.
Beat all New Game PLUS levels in World 1.
Beat all normal and NG+ levels, collect all the Apples and beat all the Trophy times in World 1.
Unlock and beat New Game PLUS level 101.
Watch one cutscene in the settings.
Unlock and beat level 101.
Beat the trophy time of level 101.
Beat all the Trophy times in World 5.
Beat all the Trophy times in the game.
Beat all the Trophy times in World 4.
Look at one international leaderboard!
Beat all the Trophy times in World 3.
Collect all the Apples in World 5.
Collect all the Apples in the game.
Unlock all arcade games!
Buy all pieces of clothing.
Buy all shaders.
Unlock one arcade game!
Beat all the Trophy times in World 2.
Beat all the Trophy times in World 1.
Beat all target mode challenges.
Beat one target mode challenge.
Buy all Playstyles.
Buy one piece of clothing.
Buy one piece of sideart.
Buy all pieces of sideart.
Find grandpa-san in Slime town.
Beat all levels in World 5.
Beat all levels in the game.
Beat all levels in World 4.
Collect all the Apples in World 4.
Beat all levels in World 3.
Collect all the Apples in World 3.
Beat all levels in World 2.
Collect all the Apples in World 2.
Beat all levels in World 1.
Collect all the Apples in World 1.
Buy one shader.
Talk to five citizens in Slumptown.
Buy one Playstyle.