Here is the full list of all 40 Pickers achievements.
Restore all items before they are sold
Maintain the leader position for 7 days
Reach the Number 1 Rank!
Buy a group of items at less than 65% of the asking price
Buy an Accordion
Auction 20 items for a profit
Buy a Motorized Scooter from Hambone Richards
Make a 300% profit in an auction
Complete each hidden object game without using the scanner
Complete each hidden object game without using any hints
Consult the Expert 20 times
Buy a Jukebox
Find all 60 keys
Unlock all locations in the game
Buy a WWII Helmet
Reduce your store inventory to one page anytime after the 20th day
Buy CJ Baxter's safe
Buy a Bigfoot Photo
Buy a Snow Globe
Buy a Movie Projector
Create 10 new items using the combine tool
Explore every scene, hidden object game, and close up in the first 6 location
Make a profit 5 days in a row
Combine a Suit of Armor with a Sword
End a day with Patrick Merman in a green mood
End a day with two or more characters liking you (in green)
Buy a Vampire Hunting Kit
Sell 5 items from Lizzie Davis' crawl space
Buy a Sun Clock
Buy a Maffler Man
Collect 40 keys to unlock Unlimited Hidden Object Mode
Bring an owner's mood from angry (red) to happy (green) in one day
Buy and sell 20 items from the Hot Category
Combine two items to create something new
Buy an item at less than 75% of the asking price
Complete 5 unique hidden object scenes
Restore an item
Complete a hidden object scene in under a minute
Buy and sell an item from the Hot Category
Change a character's mood to green in one transaction