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