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