To make this easier set the difficulty to Easy.
Zombie blood can be found either by digging up.
As a reward for powering up generator 1.
Using the ultimate ice staff to put out three flaming carts and then retrieving the blood from on top of excavation.
From killing a zombie as a drop.
Easiest way to get the three revives is to just have your partner(s) go down near you during your 30 second zombie blood episode.
Easiest way to get the generator power up is after you power up generator 1, to open up all the doors to get to generator 2 and then have your team start powering up the generator, grab the zombie blood off of the chest by generator 1 and then get to the influence circle to grab credit for it.