With 2 players on Terminal,go left side the whole way(only 8 fences),1 Ticker the other Grenadier,the grenadier kills the cog protecting the Ticker while they chew done the fences & bombs the first hole then the mauler should be in play.After the second hole the Grenadier player should also have a Mauler(if not no biggie) in play,go smash them suckers.Have done this method for 3 players now all times under 5mins with the quickest being 4min 15 secs to destroy generator.