Search and Rescue
Briefing:
The attack on our Plasma cannon was a distraction! Communication with Settlement Alpha have been lost. Bioscans detect two unidentified alien lifeforms in the area. A tactical team will be deployed to investigate and extract any surviving colonists.
Mission Objective:
Regain control of Settlement Alpha.

You'll be out there in the cold by yourself again in this stage. Initially, you'll start the mission with a team of snipers, a rocket launching mech, and your hero (Taggins or whichever hero you have selected). The key here is to take things slowly and one at a time. You have the option to transform your snipers into rangers to make them beefier, or maintain the snipers and secure them at the back of the pack. The good side about having snipers is that they have incredible attack power and range as well. The bad side is that the have no armor which makes them a target for the enemies. In our case, we just are not fond of using them, which is why we switched them to rangers from the get-go.
As said earlier, the key here is to take things one at a time. Lure in your enemies, pull back a bit and kill the baited ones. Take time to replenish your HP if your soldiers take a hit. On the entry near the enemy encampment, there will be a new type of enemy which dashes and charges your team and self destructs. This is probably where the snipers will be handy, but nonetheless, even if the enemy blows up in your proximity, it wont be enough to kill your hero and your rangers. Take the time to recover your HPs before pressing on to the enemy base. Remember to use the mini turret in this level and take the time to let the summoning gauge recover before advancing your group. Take note that there is an option in the Tech Upgrades to increase the damage the turret deals whenever it is called for in the battlefield.
Take out the fell refinery in this encampment and build your own base from it. There is also a free stockpile of etherium south of this base so grab it to quickly build your defenses. As soon as you earn the etherium, build towers to defend the newly established base and try to recover your ground troops while fortifying the defenses. While trying to build up your defenses, it is most likely that several hordes will try to overrun your camp coming from the west and south entrances so get your forces in those places. When you have secured all towers and generated shield for your structures, should you only continue patrolling with your ground troop. You may want to pick 2 ranger teams with your hero to easily destroy enemy structures. This team is also rather forgiving as they can take a lot of damage and recuperate fast so they are somewhat less tedious to manage. Patrol southwest of the base and try to obliterate all enemy structures in there. At the bottom part of this enemy encampment, there is a recruit plus icon too. This would greatly help strengthen your patrolling team, or should you choose to leave the new recruit help defend your base, is just as helpful.
Upon completely clearing the area, proceed to the south eastern part of the map. In our case, we headed out with just 2 ranger teams with Taggins the first time. As it turned out, they didn't survive the holocaust. We gathered a new team, fortified with a Flamewalker mech. This time, without a hitch, we've cleared the area and found additional recruits to add to our team (melee sword fighters) - which at the same time increased our maximum number of recruits to four.
Now we're onto the final leg of the mission and have been given a mission update to locate the blocked entrance at the north. Regroup and drag your team to the north. You'll have to assist the remainder of your attacked colony base up there and hold the enemy forces until the you manage to detonate the enemy lair (by sitting in proximity to the computer and letting the gauge fill up). Take note that the enemy horde will try to overwhelm your group near the computer as well as your base on the center of the map. When either one fails to hold their attack, the mission will fail. Hence, use your Special Items like mines and bouncers in this one. Also, make full use of your mini turret in this leg of the game. Upon successfully detonating the enemy lair, you'll earn victory in this level.