Here is the full list of all 27 Leave Me Alone achievements.
Collect all skates!
Get the maximum vitality
Get the maximum power
Collect 1000 smiles!
Collect 500 smiles!
Kill the last boss
Kill the Alpha
Collect 35 skates!
Destroy the mothership
Kill the temle guardian
Get the maximum critical
Kill the Flaming Insane
Kill the acrobats
Kill the illusionist
Destroy all hearts of the Great Devourer
Collect 15 skates!
Kill the lumberjack chief
Jump from the train and survive
Kill the hungry mad pet
Kill a reptile in the sewers
Sweet revenge for passcode
When you can not, but really want
Collect 250 smiles!
What do parents think?
Buy the ticket, take the ride
Just for kids
Collect 50 smiles!