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