Zmain Tips -
1 - Upgrade your normal zombie card, and your bloated card first, these are the 2 zombies you will be using the most
2 - Bloated Zombie is the gold standard for an all around great zombie.
3 - If no one is going med zombie, it might be a good idea to take one for the team. Med zombies earn a shit ton of BP, and everyone will be thankful
4 - Never go Nerf or Normal Butcher, there is rarely a time you should ever consider it.
5 - Shades are vital for winning against certain cades. If the zombies are having an extremely tough time getting to a cade, bite the bullet and click shade, the Z team will be thankful
6 - Shade is what you should go, Omega Shade is when there are tons of loose props, as omega has way less health. Frost is for smaller cades to hurt the humans when the shield pops, and Shadow is for healing any of the other shades
7 - Communicate with your team. Ask for med zombies, and someone will go med zombie, dont just wait and die. Call out any runners, or anyone with god mode, etc. If you are shade, call when you are pushing up to the cade so the zombies know when to rush.
8 - Dont use Zombine grenade unless on a doorcade or something similar, claws will do just fine, and allow you to focus one prop rather than all
9 - Always get Gold Scraps, Extended Claws, Blood Armour, Eviscerator, Ruin, and if possible Devour Hope. These will make you a killing machine.
10 - Upgrade your cards. Unlike weapon cards, Zombie cards are never changing, they usually only add new cards for new zombies, so it wont be a waste to upgrade your cards, as they have a very slim chance of going away, unlike weapon upgrades, which may get nerfed or buffed weekly.