Easy XP And GP
However this post is about a technique about easy EXP by playing Snowball Fight. I'm sure a lot of you know about it but there's a lot of noobs who don't.
Play a 2v2 Snowball Fight match with 3 other people who understand what you are doing. You and your teammate will work together to get mission points by unfreezing each other. Stand and face a wall and hold down the left click button. This way you keep freezing yourself. Then have your teammate whack you with his shovel to unfreeze you and repeat. It's just that simple. Have your teammate switch off with you and do the same steps for each other. NOTE: If or when your mission point count reaches 255 it will revert back to 0. Don't pay attention to this. All of the previous 255 points still do count.
In a 30 minute game with about 300-350 mission points I got 2400 EXP. It is a long procedure but it does pay off in the end.