Another cutscene; another mission. This time you'll appear inside your home base.
 Story Mission
Reward 25 Hunter Points
Location N/A (Level 4 - Hughes Power Station)
Objective "Head to the Hughes Power Station on Level 4 and restore the power."
As the cutscene ends, this mission obviously is activated. Travel to the Hughes Power Station, which should already be available to you if you completed the optional Power Station Checkup mission Chapter 1. Leave your home base and the Elderly Man will give you a tutorial on terminals. As he finishes, he'll give you Energy Hex(4) and Metal-Coated Rounds(50).
Before you leave, make a point to check the bulletin board at the Guild Hall. There are missions available that you can finish as you progress the main story.
 Side Missions
 A Father Attacked
Reward 5 Hunter Points, 1500 Rubies, Compact Scope α
Location Familiar Staffer (Level 4 - Ebel City)
Objective "I have a job that might be a bit trivial. If anyone has the time, it'd be good if they could drop by. The buff dude always hanging around in front of the Guild, that would be me."
The Papa Gremlin has supposedly attacked the Familiar Staffer's father, somewhere near Cafe Chelsey. During the attack, a precious fountain pen was lost. Head out onto the map to see a red encounter hex near Cafe Chesley. Enter the fight and defeat The Papa Gremlin. He has tough defenses, but his main offense is provided by other minions. You can quickly take out his goons and then spend your time diminishing his gauges. Tri-Attacks and Hero Attacks may come in handy. Once defeated, Papa Gremlin drops a Fountain Pen. Take it back to the Staffer for your reward.
 Salvage Hunt
Reward 5 Hunter Points, 3000 Rubies, HG Magazine +2
Location Izzy (Level 4 - Ebel City)
Objective "I need a certain material. If someone has the will, the way, and above all, the time to help, give me a shout."
Izzy is the older gentlemen who is constantly bent over, rummaging through junk out and about near the Guild Hall. Speak with him and he'll ask you to get him 3 Scrapped Machinegun MS items. If you talk to him again he'll hint that the Machinegun Gears at the Hughes Power Station have them if you're up to harvesting them. You may do so when you visit the area for your story-based mission or you may have already done so. If you go in and out from the first area of the Power Station a few times, you should be able to collect them quickly and safely. Bring Izzy the Scraps and be rewarded.
 Lost in the Darkness
Reward 5 Hunter Points, 1000 Rubies, Barrier Padding
Location Charles (Level 4 - Ebel City)
Objective "I've gone and lost my notebook! Without it, I can't run my business... Please! Help me find it! Anybody!"
Charles is the rounder fellow in red found just between the Shop and the Boutique. He will tell you he lost his notebook and wants you to find it. If you talk with him a few times he will tell you where he's been that he may have lost it. Head straight for Cafe Chelsey. Sitting just by the bench to the left you'll find his Dingy Notebook. Deliver it to him to acquire your reward.
 Blackout Continued
Inside of the station, you'll find yourself immediately engaged in battle with a Machinegun Gear and some Stray Cur enemies. Though the gear is your obvious target, you can't afford to ignore the curs. They won't just disappear, even if you manage to defeat the machinegun ahead of them, so you might as well take out the animals near the start of the fight. Have Zephyr run forward and hit the machinegun with some blasts to lower its shields, then follow up that attack by having your other two fighters rush in with handguns blazing. In that initial rush, make sure that you take out the dogs and deal some good damage to the machinegun, so that you're left with only the main weapon to worry about in successive rounds. Finish it off carefully and you'll likely receive a Scrapped Machinegun MS that you can take back with you to Ebel City to satisfy the terms of the 'Salvage Hunt' side mission. You can keep exiting to the world map, then re-entering and defeating the same enemy to quickly build up three of the item.
When you've satisfied the conditions of the side mission, or if you've decided to worry about it later, you'll be able to continue deeper into the power station while battling more enemies of a similar sort.
Once you have almost arrived at the back end of the power station, you'll find yourself facing three of the Machinegun Gear enemies at once, along with some hounds. During this battle, it's especially important that you keep your wits about you. Try to take out the dogs quickly or they'll prevent you from performing the powerful attacks that you need to use in order to dispatch the machinegun enemies. As usual, the best way to hit these tanks is to start with Zephyr's machine gun to drag down the shields, then follow that up immediately with your most powerful handgun user and then finish up with your third character. This strategy works because you'll often be able to refill part of your action meter by dealing so much damage in short order and that will prevent you from falling into a weakened state where enemies can easily eliminate you.
Clearing away that set of Machinegun Gear enemies will allow you to reach the final portion of the station, where you will find yourself battling the area boss.
Tesla Tortoise is shaped like half of a bubble, with a powerful wall of armor that encases most of his fragile inner core. If you try to fight cautiously, you're probably going to die a lot. The trick to defeating him is to make long rushes in a triangular pattern. Start with Zephyr, as usual. Have him rush diagonally left or right past the tortoise so that he stops near the far wall. He can pump a lot of ammunition into the enemy that won't do long-term damage, but that's fine. Follow up that initial attack with a flurry of shots from one of your other characters, then repeat once more.
As you fight, make sure that you're moving in patterns that will allow you to build up Resonance Points, the better to initiate a Tri-Attack. You should be able to keep a healthy distance from the tank as you work your way around it, chipping away slowly at its defenses. When you have enough points, then you can mount an all-out attack and really do some damage.
You'll notice as you fight that the tank has a fragile back side where you can do more harm with your shots. Don't be tempted into getting too close, though, or you'll be pelted with laser shots that quickly build up Scratch damage. The way to easily win the fight is to make sure that you remain on the offensive and deal enough damage with each round to renew gems so you can continue attacking. Don't even think of standing still to fire unless you find yourself left with no choice in the matter. Just keep rushing and use Tri-Attack combos when you can and the tank will go down with little effort on your part.
Once the tank is destroyed, there's a cutscene and you'll receive your reward for completing the mission. Fight your way back to Ebel City. If you want, you can stop along the way to explore any areas of the plant that you may have missed on the way to the boss. You can find items such as the MG High Barrel by breaking open some crates in the blue section toward the upper right of the grid. When you finally return to your base after the trip to the power plant, you'll view a cutscene and then can choose to advance to the next chapter.
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