Скачать или смотреть Area 51 Guide for those who are doing 3 star X-TREME(i don't have tarnished trowel but you need him)

Phase 1:Upgrade bank lvl 4 and send builder immediately and send infernus at 00:06
Upgrade bank lvl 5 and send builder immediately then send builder when infernus's jail time is at 4 seconds then send another and upgrade bank lvl 6 and use gatling once cyber dies upgrade bank lvl 8 and at lvl 8 send builder at 2800 cash and upgrade bank lvl 9 and send atari after expunger attacks then get infernus and builder and start spamming meatshields and get one conjuror to bait stunlock and as soon as stunlock locks onto conjuror send out chronos and if everything was timed right the warhead won't be a problem and once you get a good push going get tarnished trowel fast do not get rails and after X-TREME uses his miniguns you can start sending rails
Phase 2:you want to phase 2 last too long as it requires a lot of RNG and timing(send chronos when warhead is around the barrel close to enemy base use this on phase 1 too)as you cannot let warheads explode during this
Phase 3:pray and use gatling when X-TREME is off cooldown(do not send chronos on phase 3 and it's a waste and it's better to wait till meltdown)