The horde is 20 rounds of zombies or if you want waves of zombies from wave 1-10 it is fairly easy for begginers with average 50k - 100k t7 and below the more troops and better heroes you have the longer wave you will survive. Remember to recall your troops after that wave.Infected horde is best to be prepared for, a well organised alliance will have the upper advantage If T8 is maximum troops at your Alliance and Alliance has enough T8 to fill HQ then send only T8. Send only best troops available to your Alliance. First person that occupy Alliance HQ will setup maximum limit, so that person should have biggest rally capacity. You should send troops to reinforce Alliance HQ. Wave 10 and Wave 20 will attack only your Alliance Headquarters and will not attack your base. It is better if you send only best troops and leave space, so other people will reinforce too. Try to send troops that will make difference. Again if you have T1 it does not mean that you have to send them just to fill space. This way you will see who will be attacked. Sometimes it helps to zoom out as much as possible while still seeing red lines. If you are not being hit, then reinforce others. If your base will be hit, then recall all your reinforcements just in case. But those who will be attacked will be hit much harder. Normally HQ level 20 is OK until wave 15-16. It looks like it matters who is defending Barricade so better to put good troops there. Strength of the attack grows slowly at first, but after level 12-13 it grows quite fast. Remember to heal your troops after each wave. After that you need to click on Barricade and repair it. There is no need to put out fire as it will go off by itself after 30 minutes. But you can still send your troops to reinforce others and continue to get points. After second fire you will lose battle and zombies will not attack your base anymore and obviously you will not get points from defense. If you didn't kill 50% or more of incoming wave, your base will be on fire. Just do not lose your own base because you reinforced others.

In new update person that you reinforce will not lose points anymore, so it is OK to reinforce everyone. You will also get points when you reinforce someone and help defending. You will get points for every wave that you successfully defended. There are 20 waves of zombies that will attack you and your Alliance members at the same time.

State of survival horde tips