The Dera is a repeater that fires super-heated plasma.
The Dera is a Corpus rifle unlockable through Energy Lab Research in the Dojo. It appears to be the weapon used by standard Crewmen, though the version available to the Tenno seems to have dramatically improved accuracy and firepower compared to the Corpus-issue design. Mastery rank 4 is needed to craft this.
See the user build section for builds using this weapon.
Try to close distance against enemies when safe to do so as a reduced distance will drastically improve your ability to predict the location of the target when your pulses arrive.
At low levels, do not be afraid to target the heads of Corpus Crewmen as you will be able to headshot them. Piercing Hit or Stormbringer is still recommended of course at later levels due to AP and Electric dealing 4x the damage instead of 2x of normal headshot.
Split Chamber works with this weapon, however, the projectiles travel inside of each other due to the 0% recoil of this weapon making the second projectle unable to be seen. This is a great advantage as you are essencially firing more pulses with no recoil.
Cryo Rounds is highly recommended as it will slow down enemies, making them much easier to hit.
This weapon naturally synergizes with Volt as Speed can allow the player to close distance and Electric Shield will convert the projectiles to hitscan.
Since the Dera is issued with a perfect accuracy to the players for a rifle, Heavy Caliber is a recommended addition after Serration, as the changes of accuracy is minimal compared to other rifles, although the travel time will make it very ammo innificient to hit moving targets.
Leading is incredibly important for this weapon, but once the user adjusts to the travel time, the high accuracy can allow them to fire off just as many pulses as they need.
As of Update 9, the projectile speed for the Dera has been doubled, halving its flight time. According to datamining, it should now be 100 m/s which sounds accurate given that previous testing of flight time had it at around 50 m/s +/- 10 m/s.
As of Update 9.5 the projectiles of the weapon now match the energy color, and a reload animation mechanic was introduced.
Due to the projectiles firing from alternating barrels, this has a convergence effect where the bolts will meet at the point the crosshair is on. This will result in the bolts crossing in an 'X' if the target moves.
Metal Auger and the puncture of Shred work with the dera, although results can vary as of update 10.1
When introduced to the game, the weapon dealt only 7 damage because it was using the same projectiles that Corpus Crewmen's rifles did.
The Dera has a very thin width, and viewed from the front it is only a few inches across or less.
Originally the Dera would only fire out of its lower barrel but the newest version of the weapon alternates between barrels with shots from both hitting at the same point regardless of range.
Reload animation does not seem to have any benefit other than mechanical movement, as no magazine or ammo is seen being added or taken away during the animation. It can be speculated that it is a heatsink cycling procedure of some kind.
Dera means stars in Latin. Also, in plural (Deras), would mean their in Swedish.
Despite the Tenno research Dera having perfect accuracy, Corpus Crewmen apparently do not.
Prior to Damage 2.0, Dera's Laser damage was most suitable against shields compared to it's current low Impact damage. On the other hand, Laser damage was one of the weakest damage types against armor.