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.
Purchase the orange box.
unlock Banana.
Unlock the suit.
Unlock moon moon.
So bag, many happy, wow.
Press Ð to rain.
Drop the doge.
I'm not a doge.
Collect 1208 Dogecoins.
Stunned.
Snipe 30 crows.
Interrupt the doge line.
Deal with it.
Wow.