How to get Magnetic Rifle in Dragon(Normal) MAT(SUBA)

1.U need a lot of serum because u can't die.If u die all your point will go to 0
2.U need a good weapon (recomended HK416,long range melee,a lot of pistol bullet)
3.U need to know a few trick of how to survive if u already alone
4.U need to remember where the "boomer" will come out and where it gonna be(i called it boomer because it will explode when u touch it and slow your speed)
5.U need pro team.(When u run out of bullet,tell your freind not to kill first.Refill your bullet first)

OK thats all
Note: DONT DIE,I RECOMENDED U TO TRAIN A LOT!