Here is the full list of all 15 Evil Pumpkin: The Lost Halloween achievements.
Read all the wine labels in the cellar
Acquire 2 giztruments
Solve 3 mini games
Go Everywhere
Complete the Theatre mini game without hints/in less then 90 sec
Take a shortcut
Complete the labyrinth without timelapse
Play 5 games of matches with Lemuel
Seek and destroy all the pumpkins in the pumpkin world
Upgrade 3 giztruments to level 2
Upgrade 3 giztruments to level 3
Complete all the mini games (without skip)
Meet 2 animals
Carry an olympic thorch without excess
Finish all achievements