How to get Poetry in Motion & Survivor achievements in no time

Ghost town map is the easiest in my opinion,you will see below why i think this.

I strongly recommend you to get the Magnum,it's way more powerfull than the 9mm pistol and the revolver.You need to find only 10 manuscript pages in the main story in order to unlock the magnum.

The main weapon of my choice is the Assault rifle which can be unlocked with only 20 manuscrIpt pages!It's located near the Magnum,if you take the right path you will find it.

On the top right corner of your screen you see a big number,thats the multiplicator which multiplies the points of each kill x2,x3 etc.The higher the multiplicator,the more points you get.Now,the important thing is to try to make your multiplicator x9 as fast as you can.Right after you get your weapons of choice,dont shoot the enemies around you but avoid them when they try to hit you by pressing the Shift key.Each time you avoid an enemy attack the multiplicator gets higher.It should take around 1-2min to get your multiplicator at x9.

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Keep doing that until the multiplicator is x9.

Nice!Good job,now you are ready to killl the Taken!You have to find a good spot though!

The are two perfect spots,the first one is in the Ghost town map as seen in the picture below

As you can see you are safe from 3 sides,no one can hit you behind your back.You have to worry only about the enemies coming in front of you.The grenadier cannot hit you either,so this corner is almost a safe heaven.

The second perfect spot is in the Caves map,located on the ship
The Taken cant hit you from the back because there is no way to climb the ship wreckage
You have to worry only about enemies coming from the front side so you are almost safe!

Now you are ready to fight,keep killing the Taken fast and try to keep the multiplicator as high as you can!

If you run out of ammo in the Ghost town map,you can find ammunition box near the camping spot

Right there you can find also a flaregun which can be usefull against hordes of Taken.

The achievement Poetry in Motion can be obtained also in normal arcade levels but it's easier to get 100k points in Nightmare arcade levels.Obviously the difficulty is harder and it takes double the bullets to kill the enemies BUT the advantage in Nightmare difficulty is that the enemies keep spawning without pause,so you can get more kills & more points in total.