Step 1: get about 1800 points in the very beginning

Step 2: knife all dogs you see before the 4th nuketimer

Step 3; cook a grenade and throw it at a horde of zombies if done correclty you should get 1000 points which should give you like 3200

Step 4: Knife all remaining crawlers and depending on how many you have you should end up with close to 4000 like 3500 or 3600

Step 5: shoot all your clips into a horde of zombies after that you should have about 4500 if not more

Step 6: cook your last grenade and aim just like you did in your last grenade should give you 5k

Step 7: dont waste all your sally ammo yet shoot one bullet at a time and jump back once you shoot

Step 8: do this until you have enough to get juggernog

Step 9: do a quick rape train at the tele pad then make your way to the pool area again and now rape train turn around shot 2 bullets at the zombies feet and there you go you have got over 100 kills