Do your best to try and shoot as many memes as possible.
Tap and hold to aim your shot, release to fire.
Try and get as many headshots as possible for extra coins and points.
Collect coins and unlock new characters such as:
-Ethan from H3H3
-Idubbbz
-Robbie Rotten
-Bill Nye
-Timbs
See if you can unlock the Very Expensive Milkshake (be warned, it is very expensive)