Each shot of this gun deals a massive punch of 168 units, with an Accuracy of 45%
Typically, damage is done in bundles of 12,24,36 and 48 depending on the proximity of you and your target. It has a blistering rate of fire of 1.0/s (faster than a Snotgun), and is thus good for combos with cannons. It also has an aggresive paint job, with bright orange streaks on the handle of the gun.
This gun is often thought to be the variated version of the Pain Hammer, since they both possess the same damage output. They also have a 'firery' paint job on their handles. However, the Pain Hammer is a credit weapon while Firewave is available for coins at Level 40. It can be bought permanent for 54,000 coins.
Warning: Do not get directly in a players face when they possess the Firewave, as that would mean that all 168 units of damage would be absorbed by you. Unless you reccently picked up an UberHealth/UberArmour/or are wearing loads of armour, this is by all means fatal.