Mission 02: CELERIUM | Missions: Challenges CoD: BO II Guide

Last update: 11 May 2016

Eliminate enemy heli before lift off

When you land at the beginning of the mission, clear the first place of opponents and get upstairs (up the stairs on the right or by the elevator on the left). You will get to an helipad with two helicopters. Immediately pull out your second weapon - the Titus - use the scope and then shoot at the helicopter. The bullets can stop at the boxes, to make sure it doesn't happen, get closer to helicopter (for example, you can hide on the stairs, under the wall) (first picture above). When the helicopter explodes (second picture above), make sure that you have received the message about the successful passing of the challenge. If this does not happen, it means that you are late and Salazar destroyed the helicopter for you. In this case, simply load the last checkpoint by exiting the mission menu and loading the mission again.

Destroy sentry turret (x2) while disabled

To pass this challenge you must have EMP grenades. You can't miss the three turrets, because they will be on your way - behind the gate to which you will need to go after clearing the helipad with helicopters. Hide behind the boxes to the left, in the gate. Throw an EMP grenade at the right turret (picture above) and then shoot at it with the Titus.

The second turret is just to the left, but just in case, it's better to get closer to it and hide next to the ammo crates (remember that you can also refill grenades in them). Throw a grenade at the turret (picture above) and get rid of it with the Titus.

If you haven't passed the challenge yet, then the third turret is on the left, in front of the stairs leading to the remaining part of the ruins (picture above).

Eliminate enemy personnel (x4) with one round from Titus weapon

There is one certain place to pass the challenge. When you get down in the elevator in the research facility and clear the first room, destroying the first nitrogen tank, look around. On the left there's an entrance to a room, and in front of you there's a ramp leading down. Change weapon to the Titus, select the ramp and after going down the ramp look left - through the second door leading to the abovementioned room. In front of you there's a third door and that is where you should shoot with the Titus (picture above). Two to three rounds should kill enough enemies to fulfill the condition of passing the challenge. If, however, this did not happen, go to the menu and load the mission or get yourself killed.

Eliminate enemy personnel (x10) with heli turret

As soon as you destroy the first helicopter (the one from the first challenge), hold down the sprint button and run up to the second helicopter, covered with a blue sheet (first picture above). Behind it on the left, at the bottom of the helicopter there is a place you need to look at and press the use button to hack into the machine computer. In this way, you will be able to use the turret to eliminate enemies, and to pass this challenge you need to kill ten.

Get the turret going and begin the extermination (picture above), but do not shoot all the time, because it will get overheated. On the other hand, do not wait too long and not shoot, as you'll have to get it going again, which will mean losing precious time you don't really have. That is why, the best you can do is to find the golden mean. Take half-second and one-second breaks and kill those enemies who are nearest to you in the first place. Keep looking around the battlefield vigorously to locate them. Do not waste your time on destroying the vehicles - focus on the soldiers.

Eliminate enemy personnel (x30) while using optical camo

As soon as you get to the lab, go down the stairs to the first room and notice the box on the right (picture above). Open it to put optical camouflage on, and from now on make sure that you have it turned on all the time (remember the button that turns it on). The camouflage can rarely turn off by itself, but it will if there is a powerful explosion near you. It will also happen each time you press a button (when you want to open the door or use the elevator). In such cases, do not forget to turn it back on. Each killed human will count in this challenge, so don't let your team-mates kill everyone.

Destroy enemy ASDs (x2) by exploding nitrogen tanks

You have several opportunities to do it. The first will be just after you've gone down the elevator in the laboratory. You must, as soon as possible, destroy the opposite nitrogen tank (there are four vertical tanks slightly to the left, in front of you and there's a red horizontal bar on the upper part of each tank) (picture above). Next to it, the first ASD should be passing by.

The second opportunity will be right after that. Just opposite the elevator exit there is a corridor, which turns to the left. At the turn, in the corner, there are some nitrogen tanks. If they've been destroyed, load the last save. If not, wait for the ASD, which will go out from the left. You have to lure it somehow (e.g. by shooting at it) to make it come near the tanks or just wait for the right moment. When it comes (picture above), start shooting at the tanks and look out for the message whether you've passed the challenge.

If it didn't show up, you will have one last chance soon after you've freed the scientist from the container. A lot of enemies will enter the room, along with two ASDs. There are two nitrogen tanks here (picture above), so with a bit of luck you'll pass the challenge easily.

Eliminate enemy personnel (x10) with the Assault Shield

When you free the scientist from the container and when a lot of enemies enter the room, along with two ASDs, you will have to wait for a while. After a short while the Assault Shield will appear on the right device, just in front of the entrance to the place with the container (picture above) - take it. Your task is to kill ten enemies with it. To kill an enemy with it, you will need two blows.

To make sure you pass the challenge, you have to start to run and kill enemies right now, because later there might not be enough of them. Moreover, your allies will not be idle, "taking away" your enemies. To ensure better security, you can first destroy both ASDs and then kill the enemies with the shield - kill at least a few (picture above).

Once you obtain Celerium, use only the shield to fight with the next enemies till the end of the mission (picture above). Many of them are positioned one after the other, making it much easier for you to pass the challenge. On the other hand, your team-mates will make it more difficult, so always try to run ahead of them and get the opponents before they're shot.

Protect ASD resource from destruction

Follow the team-mates to the great warehouse. Note the word Access in front of you (picture above). Walk up to the container and press the use button to run the ASD, which will now be on your side. Do not let this challenge mislead you, the only thing you really need to do to make sure the ASD isn't destroyed is to fight. Your ASD should easily make it to the end of the mission, only the nitrogen tanks explosions and EMP grenades can damage it.

Collect intel (x3)

See the "Intel" section or the description of a mission walkthrough to discover where you can find intel in this mission. Collect it all to pass the challenge.

100% survivability rating

During the first part of the mission, do not make any stupid mistake - don't be late when pressing the appropriate buttons, and also do not crash against the rocks during the flight. Later, watch out for grenades at the helicopter landing site and in the remaining part of the ruins, do not kill yourself with your own Titus bullets. Later, most of all, watch out for the nitrogen tanks. If they explode next to you, you'll freeze to death.