Take on Quests
PvZ: Garden Warfare 2 has optional quests that sort of serve as bounties for you to complete as you play the game. They range from anything between vanquishing foes with a particular ability to playing a certain mode. They are a necessary part of obtaining Stars to use in the game, but they also have an extra perk that players trying to level up will find quite useful.
Completing quests earns you a pin on the bulletin board. For every five pins, you’ll earn a higher XP multiplier. Your life will become a lot easier once you unlock the “2X” multiplier after completing 20 quests. The multiplier applies to all things, which means that even those easy kills you can get in the Backyard Battleground will start to make a difference.
Even better is the fact that this multiplier is the only perk that carries between all of your characters.