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. This weapon has been launched again on November 17, 2014 as an event prize by completing the last tier.

How to obtain
The Thumper can only be obtained when the Hand Grenade Fest is active. You could obtain it by getting 85 kills with grenades and it is unlocked at Tier 14 (507 kills in total, combining all tiers).

Strategy and Tips
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, but can 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.

Counter Guide
Here is a page to learn how to counter the explosive Thumper.

Advantages

 * 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.

Disadvantages

 * 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.
 * The event was very difficult last time so not many people have it.
 * Auto kills are common due to its damage,range and its explosive impact against players
 * Not effective against people wearing the Anti-Explosive Suit.

Trivia

 * The Thumper is the second limited-time weapon to return, and it the first weapon to be presented as a tier prize twice.
 * 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.
 * The Thumper resembles a real life M79 grenade launcher.
 * It also resembles Dead Trigger 2's Grenade Launcher and Team Fortress 2's Loch-n-Load which is also a strong explosive weapon.
 * 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.
 * Along with some other weapons, the large cross-hair (when moving) does not affect the accuracy of the weapon at all.
 * The Thumper's blast range has been reduced after being relaunched again on November 17, 2014, during the Grenade Fest Update.