Here is the full list of all 13 Apple Slash achievements.
Kill the Blob Mother 3 times.
Avoid Gumm's trap.
Beat the game without taking damage.
Departure in under 15 minutes.
No damage during the Blob Mother's fight.
Kill 1000 blobs.
You beat the game!
Acquire the special skills.
Find the secret concert.
Defeat the Blob Mother.
Kill 500 blobs.
Kill the Blob Mother once.
Kill 250 blobs.