Here is the full list of all 35 Microtransaction Simulator achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
Mania
A small loan of 1 million dollars
Some people graduate but they still stupid
Old habits die hard
Unrelated
Don't even try it
Past the point of no return
You dug a hole
Lucid once
Yum
...
Open 100 packs
Open 50 packs
It's a secret to everybody
Get a turquoise
Get a green
yeah
Get a fuzz
Take a look at me now
Get a purple
2017
Get a red
Get a blue
Sometimes there is a free lunch.
Get a brown
Get a white
Harder than it looks
Is this a bug?
This can't be a mistake
literally idle the game for 4 hours. Stay at home and don't spread the coronavirus.