

Once the power is on build the Pack a Punch machine and buy armour then return to the starting area and keep finishing the rounds. I would recommend buying through the left path to speed cola when underground. Then carry on Melee killing the zombies until you have at least 6500 points to turn on the power. It's actually more time efficient to start with the combat knife and melee zombies in the first area until round 6 then buy through to Jugger-nog and purchase it and the Gallo SA12 off the wall of the plane. These are permanent upgrades which should increase your chances of surviving later rounds but none are required for the achievement so it's probably best only spending them on perk upgrades until the achievement is out of the way.

Let them down you then revive yourself and let them down you again to end the game and receive the match bonus exp.Īetherium Crystals can be used to upgrade other useful skills such as Weapon class, Field Upgrades and Ammo Mods. You should only be spending your points on the ammo cache until you hit round 11 don't bother opening any doors at which point you can call in the evac chopper which will immediately spawn zombies next to you. It takes between 10-15 minutes to complete the first 10 rounds in the starting area. the amount of crystals earned will subsequently start to increase the further into the later rounds you go. You get a Aetherium Crystal at the start of round 11, then every 5 rounds thereafter. Once at level 51 you will need a total of 36 Aetherium Crystals to upgrade all 6 perks to Tier III. Multiplayer, Zombies & DOA so all player experience earned is cumulative across all modes. Your level carries across all game modes e.g.

To unlock this achievement you will first need to reach player level 51 which unlocks all perk skills
