Dark Sector
38 Achievements
1,000
40-50h
The Dark Sector
Completed the Game.
100
How to unlock the The Dark Sector achievement in Dark Sector - Definitive Guide
To do this, at the start of the battle, pick up any ammo needed from the right from the crates. Aim for the little light blue bulbs on the tentacle things sides, when you shoot the two off from one tentacle, equip your Glaive, throw it up to the lightning bar up top, then aim for the blue looking eye in the middle of the tentacles. Do this for this for all 3 tentacles.
After that, Mezner will be revealed from his chamber thing. Using your Glaive, you MUST!!!! make a power throw, if you do not do a power throw, you will die instantly. (If you don't know how to, hold "RB" until the crosshair turns yellow then immediately let go.)
Now Mezner will spawn two more tentacles. These are easier, just shoot the light blue orbs on their neck/body areas, (there is only one), then use the lightnining bar with the glaive, and throw the glaive at their eyes.
Mezner will pop out again, power throw him.
The final stage, mesner spawns about 5 tentacles, 3 in the front, 1 on each side of Hayden. Destroy the two on the sides first, as they have a tongue thing that can be very annoying. For these guys, you have to destroy the bulb on their neck/body, and on the back of their neck/body. (It's really easy to do), then use the lightning glaive on their eye part.
After taking out all 5, Mezner will be revealed again. Power throw him one last time to kill him and unlock the achievement.
Thanks
If you thought the 10 point level achievements were kind of weak, wait until you reap the rewards at the end. At the start you'll have to fight off some soldiers, in which a grenade at the immediate start is useful while they're stunned. The only other encounter is the final boss, which isn't too difficult if you do it right. Three large tentacles will come out, and you'll have to charge your glaive with electricity to hurt them. If they're closed, use a power throw on the nubs to make them open, exposing the eyes. Use Aftertouch to guide the glaive into the eyes, destroying the tentacles, right after the last one is gone quickly swith to your assault rifle and shoot Mezner in the center of the pod and switch back to the glaive when he stops attacking. Another two tentacles will come out, along with zombies that spawn when another dies. Try to ignore them, focusing on the two tentacles and on the last one get ready for Mezner again. The third wave the zombies will be gone, and their will be five tentacles, three in the middle and one on either side of you. Take out the ones on the side first and then the ones in the center. Thats all there is to it, and you'll have beaten the game!