Here is the full list of all 37 Not Another Weekend achievements.
Found the Prankster
Showed a Piece of Fabric to a Prankster
Messed with Gia Donna's Demands
Got Rid of Westy Jones
Found Uncle's Brain
Tested Jean Bam's Reflexes
Got Rid of Jack Pelican
Got Rid of Jake Bigson
Got the Show Back On
Acquired Item Receipt
Witnessed Gia Donna's Comeback Show
Got Rid of Eddie Mason
Found Out the Robot's Identity
Got Rid of the Jeffersons' and Miss Swartz
Got Rid of the Michaels'
Got Rid of the Funnies and Ritz Buganan
Helped Dt. Verbin with his Interrogations
Gave the Correct Order to Miss Swartz
Gave the Wrong Order to Miss Swartz
Got Rid of Bob
Planted Some Evidence to Incriminate Gold
Got Rid of Shao Lee and Ginger
Got Rid of Steven Prince
Got Rid of Terry Slogan and Adult Mutant Mouse
Got Rid of Bernie Gold and Mark Verbin
Jonny Left
Came Back from the 4th Floor with Hotelnomicon
Got Rid of Eddion Mason (For Real this Time!)
Performed the Ritual
Read the Description of All Works by Stopper
Witnessed the Menace that Terrorises the Floors
Found Someone that Ate in the Hotel!
Seen a Shy Loner Dressed for the Job
Showed a Massage Device to an Actress
Paid Respects to a Fallen Hero
Played a Video Game
Almost Wasted a Unique Wine Variety