Here is the full list of all 24 Title_Pending achievements.
Complete the Game in the Fewest Restarts Possible
Complete the Cycle
Finish the Playtest
Meet Them
Print all of, wait, what?
Become Trapped in Speedrunner Hell
Wait, there's Fall Damage?
BACK TO THE VERY BEGINNING
Play Too Fast
Construct the Debug Glasses
Cover Yourself in Paint
Purchase 200 Stanton Sodas
you're winner!!
Skip the Entirety of Level 2
Destroy 10 Security Cameras
What a convenient time for a Hammer!
Escape Level 1 (for now)
Have a hearty bowl of oatmeal
Find a Vent Hideout
Please Behave Yourself
RRRRRRRRRRRRRRRRRRRRRRR
Cause Bankruptcy
Do it Again
Get Softlocked