T.A.G. Seeker

The T.A.G. Seeker is a brand new weapon available on the development version of Nexuiz.

Its primary fire is a laser-looking shot that, when it hits a player, marks him. Then four rockets are fired and follow the marked player. It is possible to run from these rockets but it demands movement skills.
The secondary fire consists of a rapid, spread fire of hagar-like grenades with a really short lifetime. That creates some sort of explosive shield in front of the player, leading to confusion and damaging players that come close to it.