Send an enemy at least 30 meters with Impact.

- This is really easy to do. First, go into the INFESTATION game mode. Then go to Xbox LIVE or OFFLINE (If you don't have Xbox Live), and host a Private Match. Then go to the Upgrades option, and buy the "IMPACT BOOST" upgrade. The reason you need the boost, is because the boost will make the enemies go farther when using IMPACT. You need 1000 Salvage (Money) to buy this. You can easily get Salvage from playing 1 or 2 waves in Infestation. Once you've bought Impact Boost, load up the map "Dust To Dust". Make sure when your picking your weapons, to press RB to select the Impact Ability. From there, you want to look for the building on the highest point of the map. It should have a long bridge next to it. Then lure an enemy or two up there, preferably Creepers (Small Crawling Alien). Wait until he is just about on the bridge, and use Impact.