Thumper

The Thumper is a new grenade launcher introduced in the Grenade Fest update on May 28th, 2014 as a exclusive weapon similar to the famous Hunter Rifle in the Easter Egg Event in April.

How to obtain
The Thumper can only be obtained by getting 350 kills with grenades as it is unlocked at Tier 8. (1070 kills in total, combining all tiers).

Gameplay And Strategy
The Thumper's model itself promises the gameplay. It is basically a Grenade Launcher mixed with the Flare Gun's break action reload, Shotgun's pump action system, and Hunter Rifle's single ammo count.

The Thumper is a hard hitting weapon, but is useless against heavy armor players, especially for those who has the Anti-Explosive Pack.

It is advised to wear an explosion damage reducing set or a set with high armor when using the thumper so auto killing wouldn't happen frequently.

Like any other explosive weapons, the thumper has no auto aim, butcan defeat low armor players quickly. Use Run And Gun strategy due to the gun's exceptional agility and the explosive effect. Circle around players if the user has enough speed. Then fire it at the opponent. Make sure after one shot that wastes the ammo quickly reload. The reload is break action, so it is fast. But warning, it has a 1 second delay before reloading. This makes the user vulnernable to high powered enemies. Even reloading, Blunderbuss players can do the quick killing to Thumper players.

Pros

 * The Thumper can inflict a massive amount of damage, which is able to kill low and medium armored players.
 * It has a long effective range
 * Great accuracy.
 * Explodes on impact unlike the grenade launcher.
 * Explosion radius is big.

Cons

 * The Thumper has only 1 round, making the user vulnerable when reloading.
 * The grenade curves down whenever it is shot far away.
 * Unobtainable after the event.

Trivia

 * The name of the grenade launcher "Thumper" may try to point out to the real life break action grenade launcher where else this thumper has a pumping slide mechanism which can only be found on the China Lake grenade launcher. The Thumper itself was a China Lake grenade launcher. But somehow it's stock resembles a Benelli M4 shotgun.
 * It resembles Dead Trigger 2's Grenade Launcher.
 * The first video about the Thumper review is suspected to be made by a hacker due to the fact the reviewers money is extremely a lot. Weirdly, he is not banned.
 * A player has managed to hack Respawnables during the Grenade Fest event and the results: gained the Thumper by not even playing and throwing one single grenade.
 * Ironically, it is sometimes called Thumper Gun like in the description of the Grenade Fest Update.
 * It closely resembles Team Fortress 2's Loch-n-Load which is also a strong explosive weapon
 * The Thumper resembles a real life M79 grenade launcher.