Map advice: Gridlock.

Ah, Gridlock. By far the most popular map.

Plans:
Plan 1 send half of your team to the boomshot and the other half to the sniper. Boomshot team will flank any enemies at sniper nest and then elimanate all other enemies.

Plan 2 Get every one to rush sniper, and one half of your team will flank around and kill any enemies at the sniper spawn.

plan 3 rush the boomshot and send one member of your team team to flank and kill the enemies.

Advice Keep your head down and stay on your here as the oppopsition will usually have a boomshot or a sniper. Rushing is nto very effective. Pistol wipping and chainsawing is effective near the boomshot and sniper spawns. Lancer fire is also quite effecitve, but only when two people fire. Also remember the frags. These can come in quite handy.