Here is the full list of all 15 Montaro achievements. It takes around 2-3 hours to unlock all of the achievements on Windows.
Collect 802 pantsu.
Unlock the suit.
Purchase the orange box.
unlock Banana.
Drop the doge.
So bag, many happy, wow.
Unlock moon moon.
Collect 1208 Dogecoins.
I'm not a doge.
Interrupt the doge line.
Snipe 30 crows.
Press Ð to rain.
Stunned.
Deal with it.
Wow.