Full list of all 58 Day of the Tentacle Remastered achievements worth 1,000 gamerscore.
All achievements
Achievements they've won
Achievements they've not won
Wake up Dr. Fred
Open the safe
Ask the IRS agents if they're related
Squirt five different people with disappearing ink
Try to put something metal in the microwave
Try to flush the hamster
Try to wash the dirty car with the brush
Pick up 30 things that don't belong to you
Get all six novelty items
Deflate Oozo
Cook the hamster in Maniac Mansion (Don't try this at home, kids!)
Play Maniac Mansion
Return the stamp album to Weird Ed
Try to swap the textbook with the stamp album
Turn off the television
Close a door
Destroy a cherry tree
Make it rain
Create a cherry tree
Pick up 15 things that don't belong to you
Get a job
Hoagie eats a Hoagie
Find Fred's basement workshop
Ring the front desk bell 100 times
Get all other achievements in the game
Power Hoagie's Chron-o-John
Power Laverne's Chron-O-John
Acquire a diamond
Defeat Purple Tentacle yesterday
Play the whole game without skipping a cutscene
Sit through the end credits
Disqualify Harold
Try to alter the contract with Booboo-B-Gone
Try to sign the contract yourself with the quill pen
Pick up 45 things that don't belong to you
Flush 50 objects through time
Change the flag
Climb through the chimney with all three kids
Clothe Laverne in the costume
Make vinegar
Enter the human contest
Laverne tries the chattering teeth on her human during the human show
Win the human contest
Talk to Washington, Jefferson, or Hancock while they're outside
Red makes a super battery with only a little help from Hoagie
Hoagie uses battery with Chron-O-John instead of plug
Get a tiny sweater
Microwave the frozen hamster
Try to microwave the hamster again after he's thawed out
Make a skunk
Vacuum up a hamster
Get Fred to sign the contract
Reach yesterday without turning the stereo off
Talk to Dead Cousin Ted with all three kids
Try to mix the red paint and the Booboo-B-Gone
Try to mix the decaf and caffeinated coffees
Try to mix the disappearing ink with Booboo-B-Gone
Laverne thinks about eating the cat