The Burst Twin is a Tier 3 tank that upgrades from the Twin, and upgrades to the Burst Gunner and Burst Chaser.
The Burst Twin has a circular body like most other tanks. It has two sets of three barrels of varying lengths - kind of like two sets of a three-barreled Gunner but with Twin width. The shorter the barrel is, the lower down it is, meaning that the one overlapping the other barrels in its set is also the longest.
The Burst Twin fires a burst of bullets from all six of its barrels, from front to back. The front two fire simultaneously, as do the middle two and the back two. The front set of bullets is closer together and faster, while the back set is farther apart and slower. The Burst Twin also has roughly the reload of a Sniper and the damage of a Twin.
Overall, compared to the Twin, it fires off more bullets and has higher point damage, but the Twin has a higher DPS and rate of fire.
Strong Against: Single targets, targets close to the tank, low RoF/penetration tanks, Snipers, rammers
Weak Against: Drone classes, Triplet/Gunner classes, high RoF/penetration tanks, targets far from the tank
As the Burst Twin
Your distance of killing is actually quite far, going to mid-long range. It becomes quite lacking at long range because your bullets won't do enough damage to out-penetrate the ammunition of others.
Triplets and Gunners can just spam their way through your bursts. An ambush is the only way to take them out without a long boring fight.
A rammer Burst Twin works since you get high recoil from each burst.
Against a Sniper, you can destroy its bullets with your bursts, since you fire six bullets at the same time as it fires one. The Sniper has a range advantage, however, so if you can't see it, just run.
This class is capable of long-range sniping with a full undisturbed burst if another tank hasn't noticed you yet, which is quite easy to do as a Level 30.
This tactic is especially lethal if you're a low level Burst Twin against a tank that's already in a battle against a higher level tank. Come up behind it from a long range while it's busy and low on health, and fire a "weak" burst at it.
Rammers just get knocked back by your burst and die.
If you can snipe or kill a Drone class, do it. If it's too risky, don't.
Against the Burst Twin
If you're a Drone class and you see a Burst Twin, kill it quickly before it can kill you. Your drones overpower its bursts.
As a Triplet/Gunner, just go closer and close to it and watch as your bullets melt through it.
If you're far from the Burst Twin and have anything to throw at its by-then-weak burst, you should be safe.