Here is the full list of all 42 Scrap Garden achievements. It takes around 3-4 hours to unlock all of the achievements on Windows.
Find the alarm clock
Get bitten by piranhas
Find the snow globe
Eliminate 300 enemies
Find the camera
Throw a ball into the basket
Break 100 boxes
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Die in the shadows
Complete the game
Defeat the dragon
Find the card
Find the green crystal
Find all holograms
Get burned by the dragon
Get to the end of rails
Defeat the toad
Get eaten by the toad
Find the pumpkin
Collect 1500 crystals
Defeat the octopus
Go down the hill
Collect 1000 crystals
Eliminate 100 enemies
Defeat the gorilla
Take a punch from the gorilla
Find the mp3 player
Defeat the worm
Let the worm toss you up in the air
Collect 500 crystals
Eliminate 50 enemies
Break 50 boxes
Find the Rubik's cube
Collect 300 crystals
Break 10 boxes
Break 5 policemen
Eliminate 10 enemies
Visit a friend
Collect 100 crystals
Complete the arcade minigame
Get back the generator
Start playing