Tank used: T57 heavy
A tricky one. Dont play to aggressive however you need to be in the fight at the same time. This is why I picked the T57. Wait for the right moment and then unload your clip for 1600 dmg. You only need to be in the top 3 in your own team so even I you are loosing you can make it. Its better to shoot at an enemy with 1600+hp than killing someone with low hp, bad for the team but good for you.
Best of luck to you