Coins are the in-game currency in Montaro, which are used to purchase doge skins, which give achievements.

Okay, so you can get coins from collecting them on the ground and on buildings, or every time you collect pantsu, you get a coin. You have to try not to die while you are getting them.

You will have to bounce on banana peels from building to building, collecting pantsu so you don't get stunned and die, and you should jump over chickens and birds, because they can easily ruin your game. When you do, make sure you listen and know not to jump right into them, because they are very fast. And, just keep grinding and dodging cats, chickens, and birds and you'll be fine.