(Image credit: Embark Studios) Finding a Comet Igniter for Tian Wen in Arc Raiders ' Collision Course quest is simple if you know the trick to getting them. If you don't, or you haven't encountered this Arc enemy much, then it's much more of a bother. These exploding balls always seem to catch me at the most inopportune moment and send me running for the hills so as not to get vaporised by their huge shockwave. That said, here's how to get this item and destroy a Comet for Tian Wen. Destroy a Comet and deliver a Comet Igniter to Tian Wen While you can find Comets on just about every map, there are loads patrolling the beach on the new Riven Tides map. These Arc look a little like Fireballs or Pops, except they're larger, more similar to a Surveyor—essentially, they're a big metal ball with a blue light on the front that will turn yellow if they spot you. When they decide to murder you, they'll roll in your direction before blowing up.…