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