how to kill the pentegon thief

the easy way to do this is on zombies single player on five.
buy quick revive and try not to die.
use pistol 1st 2 rounds.( when killing zombies. use about 3 bullets then stap u will get more points)
u need to rack up about 5000 points level 4-5
when u running low on pistol buy single shot rifle, this time put 2 bullets in chest and stab,
if u have over 5000 near end of round 4-5 try get a crawler, and make your way down 2 elevators,
turn switch on in lab area teleport to pentegon room and turn on all defuon switches
when u are at defqon level five, stay up high on platform at watch teleport for thief to come through
soon as u see him cook a grenade and blow yourself up, this will put u down with quick riveve
but gives u pack a punch pistol akimbo. should be easy to blow him up