The builder class is the only class that can chop down trees, and is good for building and setting up defenses.
Strategies with The Builder
When your in a battle your bomb's do the most damage out of your weapons, laying a trap for your enemies such as a bunch of turrets and a bomb in the middle or a simple circle of players, The Builder is best in groups. If you ever feel like an enemy is getting you down to low health then I'd recommend using the hammer then placing a bomb and blowing it up on the enemy. Please post more strategies down below in the comments or just edit.