Little Kitty, Big City

This is quickly earned by smashing pots in the first area of the game. Use or to knock pots off ledges and rooftops. (Get onto these rooftops by pressing to jump, or holding for a precision jump.) Note that any pots you knock over using your body do not count.

If you're unsure how many pots you're at, you can pause the game and see a tally in the menu. Once you smash your tenth item, the achievement will pop.