Since ME2 is the best BioWare game since Dragon Age you're probably delighted to hear that there's another free DLC available. This time it's a heavy weapon that lets you cast Chain Lightning.

<p style="margin-left:50px;border-style:solid;border-width:1px;border-top-color:#ffffff;padding:5px;border-right-color:#bbbbbb;border-left-color:#ffffff;border-bottom-color:#bbbbbb;">The Arc Projector ionizes targets with a non-visible laser to ready them for a high-voltage electrical attack. As the lightning-like bolt hits its first target, a sophisticated auto-targeting system paints succeeding targets with the ionization laser, allowing the electricity to take the path of least resistance and arc between them. An entire enemy strike team can be shocked to death with a few pulls of the trigger. Careful aiming will also allow the user to arc shots to nearby explosives as well.

Spotted at: RPGWatch