Tips for Noobs?

[IronShotGun]

You can dig one block into the floor, and place a grenade there, exploding a 3x3 hole in the ground, and using what MrHank said, right-click to dig vertically much quicker.

Cover is for noobs. *Reads title* Ohhh....

[Fluttershy]

Hyperbolic maps like Pinpoint and Goon Assault are the best learning grounds because you learn to not be stupid. Anytime you get killed on Goonhaven, it's because you were stupid (the only exception being when you are jackhammered in the beginning of the game or spaded by an enemy tunneler).

Pinpoint and Goon Assault...enemy tunneler.

New advice, disregard Tai.

[ugotpiez]

You can dig one block into the floor, and place a grenade there, exploding a 3x3 hole in the ground, and using what MrHank said, right-click to dig vertically much quicker.

Cover is for noobs. *Reads title* Ohhh....

You make it sound like you just run out in the open and shoot.

[ChaosTLW]

Flank, flank and flank. Use tunnels as frequently as possible and I recommend using trenches instead of walls.
Also, play less on square, flat maps(pinpoint, Hallway, Goon Assault, etc) and play on more varied maps like Gen and Normandie. I recommend playing on Gen Wars.

Hyperbolic maps like Pinpoint and Goon Assault are the best learning grounds because you learn to not be stupid. Anytime you get killed on Goonhaven, it's because you were stupid (the only exception being when you are jackhammered in the beginning of the game or spaded by an enemy tunneler).

Playing on varied maps, you get killed randomly and it's generally hard to avoid unless you just tunnel for the whole game (which is mind-numbingly boring).

You get killed randomly at the start, but then you get used to the way the map plays and will learn how to counter-act it in many situations.
You also learn not to be stupid on other maps, the difference is that if you learn it on Goon Assault or Pinpoint, that's pretty much the only fuckin scenario you are going to be ready to, while learning how to defend yourself in a hilly enviroment can come handy in many maps.

Sincerely, I don't see any fun in those flat maps. They just seem... unninteresting. The only map I can say I like is Hallway, but because of the massive tunneling you are forced to do, and how important bunkers become.