The first five achievements can be earned by picking up the correct item.
C-C-C-Chainsaw
Can be found at the bottom mid

STOP! Hammertime!
Can be found in the maze (at a random location)

Got oil?
Can be found top right

Pictures of you
Can be found bottom left

Nailed it!
Can be found middle on the right

ESCAPED
Once you have collected all 5 items, go to top left and go for the exit.
A new achievement ESCAPED should now popup.

There are 2 score achievements, 1 is very simple, the other one can require some practice.
Atleast you tried
Pick up all 5 items and let a ghost hit you several times. This will reduce your score to 0 fast and head for the exit. The moment you hit the exit with 0 points, you will unlock the achievement.


You did it!
This one can require some practice, but I would recommend picking up all 5 items and clear the fog (black screen) for most of the map. Keep picking up the ghost diamonds untill you reach a score of over 600 and head for the exit. The moment you hit the exit with over 600 points you will unlock the achievement.


This is where the fun begins
The moment you pick up a ghost diamond this achievement will unlock.

R.I.P.
Lead one of the ghosts over the sleeping dog to unlock this achievement.