The Imperator Vandal as rewarded in Operation Eyes of Blight comes with a pre-installed Orokin Catalyst and weapon slot.
Unlike its standard version, the Imperator Vandal has fire rate spool-up, allowing it to reach a maximum fire rate 50% higher than that of the Imperator. This makes the Imperator Vandal the third Event weapon to have an additional hidden feature over its original version, after Snipetron Vandal and Latron Wraith.
Though the Arsenal lists a fire rate of 16.67, this is the fire rate before spool-up. Once fully spooled, the Imperator Vandal has a maximum fire rate of 24.34 rounds per second, 50% above its listed value.
Despite its shots being shown as slow and even having bullet drift, the Imperator is a hit-scan weapon, and will immediately hit the enemy within its reticle regardless of distance or the appearance of the bullets it fires. As a side-effect, the Imperator can be used to snipe targets at distances of 2,000 meters or more. However, take note that the Imperator's damage fall off weakens it when attempting to engage enemies from beyond 2,000 meters, to the point of dealing no damage per shot.