Here is the full list of all 40 Kathy Rain: Director's Cut achievements.
Finished the game
Finished day four
Brought up the painful custody battle with Grandma
Unlocked the "Veteran" bike design
Finished day three
Unlocked the "Outlaw" bike design
Next level lowballing
Finished day two
Learned a cold hard truth about your face
Finished day one
Reunited with a furry friend
Tortured an imprisoned bum
Wanted everybody to have some goddamn coffee
Felt no apparent need to let Lenny down gently
Took some time to reminisce
Made your best efforts to miss the funeral
Lost track of time on the road
Revealed yourself as a creature of the night
Engaged in flirtatious behavior on the computer
Had a compulsion to barbeque a bear
Amplified Goober's "lung cancer"
Were mesmerized by Goober's monologues
Wanted to engage in a good 'ol book burning
Really had it out for Goober
Became a huge fan of those sweet, addictive, not to mention cancer-inducing sticks of tobacco
Made the outlaw bikers jealous of your sweet ride
Went to extreme lengths to reunite with Grandpa
Made quite a flaming escape
Felt a sudden urge to mow a lawn
Burned one up on Parowan Peak
Tried to fullfill Jimmy's prediction
Unlocked all of the Katmobile designs
Came close to a premature electrocution
And stay down!
Unlocked the "Shocker" bike design
Unlocked the "Fiery" bike design
Unlocked the "Rat" bike design
Momma took good care of you
Erased some filthy graffiti
Gave Grandma the first peek at the briefcase envelope