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Old 11-30-2013, 12:02 AM   #2
Nevander
 
Join Date: Nov 2007
Posts: 7,008

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ACHIEVEMENT GUIDE


Giant Killer - 20
Defeat Vorus Centurion.

Story related and cannot be missed.

The Vorus Centurion is the first boss in the game on the level 'Sabotage.'

The best way to kill him would be to use the Vorus Ion Rifle and spam all your alternative fire shots at him as soon as the battle begins. Duck behind the panels in front of you for cover. When he fires a bomb at you, move to another panel so that you don't take damage-over-time. He cannot get on the same level in which you are taking cover on. It's possible for reinforcements to show up, but for me it was only a couple small enemies. Use your primary fire to finish him off.



Secured - 20
Defeat Security Turrets.

Story related and cannot be missed.

The Security Turrets aren't much of a 'boss,' but they do classify as a unique encounter. They are found during the level 'Destruction.'

All you really have to do is take them out at your own pace. They will all be in the corners of the room you are in and they keep coming out until after you destroy both cores when you destroy the final two. Use cover, crouch, and snipe them out with whatever you have. The achievement will unlock once the final turret is destroyed.



Showdown - 20
Defeat Vorus Gladiator.

GLITCH WARNING: It is possible that this boss fight may glitch. After the boss has died, the achievement will not unlock and the objective will still say to kill him. If this happens to you, unfortunately a chapter restart is the only way to resolve it. Credit goes to upindat for posting this information.

Story related and cannot be missed.

The Vorus Gladiator is the second proper boss in the game and he is a pain in the ass. This boss is on the level 'Revelation.'

Thankfully, he's not THAT bad. Your goal here is to run your ass off and use the orange Promethium tanks against him. He will follow you around and go very close to them. Run near them and lure him beside them. Make sure you are far enough away and when he is around five or so feet from them, shoot them until they explode. These will bring good chunks of his health down. Don't bother trying to kill him with only your guns unless you have 'Mega Pistol.' Repeat the process until dead. There is no checkpoint during the battle.



Overdrive - 20
Defeat Mk XII Heavy Mech.

Story related and cannot be missed.

The Mk XII Heavy Mech is the third boss in the game and he is an even bigger pain in the ass. This boss is on the level 'Detour.'

There are three stages to the battle. The first is relatively easy, simply use the four corners as cover and shoot his shoulders while dodging his beam attacks. Whenever he does the 'weapon overcharge' attack or 'barrage' attack, do NOT stay in one place. Run around and move to the opposite side of the arena.

Eventually he will go to recharge and four generators will rise up. At the same time, reinforcements will show up. This is the hardest part. You need to make sure you are positioned at one of the corners where the enemies do not come down from. You can tell which corners these are because there will be an elevator on each side. Try your best to take out the enemies that show up first and the four generators when you can. Stay behind a corner for cover.

Once that is done, now is the longer but easier step to the battle. He will repeat his attacks from the first stage, so that means you repeat yours. You will want to fire as much as you can at his head (it will glow yellow) right after he finishes attacking. His weak spot will change one last time and it will be a small circular core inside his head. Aim for this spot to finish him off. Be very careful to not be standing in the open when he does his beam attack. It will instantly kill you in two shots. There is no checkpoint during the battle, so keep this in mind.



Gangbuster - 20
Defeat AA-19 Combat Mech.

Story related and cannot be missed.

The AA-19 Combat Mech is the fourth boss in the game and is a nice break from the ass pains you received from the two previous bosses. This boss is on the level 'Breakout.'

This guy's a joke and a half. You don't even really need to dodge anything, but go ahead just for kicks. Keep strafing around in circles and fill him full of lead. His health drains pretty quick even without perks. Eventually he will recharge, so let him do it. Take his health down again and pretty soon he will send out two flying drones. Blow them up and then proceed to finish off the boss after a second recharge. With the 'Mega Pistol' perk, you can actually kill him before he even starts to recharge.



Behemoth - 20
Defeat GX-7 Destroyer Prototype.

Story related and cannot be missed.

The GX-7 Destroyer Prototype is the fifth boss in the game and he isn't much of a challenge either. This boss is on the level 'Marathon.'

His stages are very similar to the Mk XII Heavy Mech, but without the ass pains. This boss is much simpler. As soon as the battle starts, there is nothing you can do. Dodge his smack attacks because they can easily destroy you. When you see his shoulders pop up, destroy them both ASAP. Use a combination of the Minigun and the Beam Cannon to balance your fire. Next, destroy his chest. The last piece is his core, which looks a lot like Iron Man's core. Destroy that and this prototype will stay a prototype.



Pitching Machine - 20
Defeat Vorus Primus.

Story related and cannot be missed.

Vorus Primus is the sixth boss in the game and he doesn't get much harder than the last two bosses. He also looks kinda like a transformer. This boss is on the level 'Gateway.'

His routine and attacks are very simple and don't do much damage to you compared to other bosses. As soon as the battle starts, shoot the three orange promethium tanks above his head. This is how you damage him the most. After this first attack, he may charge at you and smash the ground. Simply sprint away from him when you see him charging at you.

Eventually he will get tired of following you around and do some kind of pulse attack on the ground. This doesn't hurt you, but it will knock down ALL the orange promethium tanks around the ceiling. As soon as this attack happens, look up and move in-between the tank areas so you don't get killed by the falling tanks. When this is done, repeat the process of luring him under the tanks and shooting them down on his head. When his health is low enough, you can just finish him off with your weapons. He may also fire some small missiles at you, but just evade them the best you can.



Guardian - 20
Defeat DF9 Sentry Mech.

Story related and cannot be missed.

The DF9 Sentry Mech is the second to last boss in the game and he is also pretty easy. This boss is on the level 'Meltdown.'

IMPORTANT: If you don't have 'Mega Pistol,' make sure to grab the Minigun that the Vorus Heavy drops right before entering the boss fight. This will help immensely.

There are three stages to this battle. The last one is the only hard one, and even then it's not actually hard. Right when the fight starts, wait for him to leap to a platform with orange promethium. Shoot the canisters when he lands beside them. This will drop his health a small amount. Use the pillars in each corner of the area for cover. When he lands in the middle, he will stay in place for a few seconds. This is your time to shoot the hell out of his back with your weapon (hopefully the Minigun from before). Aim for the bright yellow parts of his armor.

The second part of the fight is very easy. You should still have plenty of Minigun ammo to almost finish off his second stage almost instantly. All you must do is fire all you can at his chest that is glowing. You will probably be out of Minigun ammo by now.

The final stage is also pretty simple, but you need to change your tactics. Don't stay behind the pillars for cover anymore. Strafe around the arena in a circle. Eventually he will do a dual-beam attack and his back will become visible for a few seconds each time. This is when you fire. His attacks won't do much damage to you as long as you keep moving. There you have it. Only one boss left!

Last edited by Nevander; 12-01-2013 at 04:54 AM.
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