Hey Halo Forge Epidemic!!! Well this is one of my many maps. It's an infection map where the zombies have to pass two tests to infect the humans. First a driving test where the zombies pick one of three tunnels. One leads to the next test, where the other leads to certain death. The next test is a maze. It's very well put together and challenging. The correct pth is when you first teleport inside take a left until you hit a dead end. Go through the a turret and go inside the teleporter. Now the zombies can infect the humans. If you don't like it, I have a few other ones which are very fun!
So wait. What are the humans doing during all this - just chilling and waiting to see if zombies appear? You have to think about the game being fun for both sides.
It should be said that The Halo Forge Epidemic has no affiliation with this site besides the fact that a few of it's members are FH members as well. To go off what Nut was saying, the game must be fun for both sides, and this looks fun for neither. The point of infection from the human side is to survive and kill zombies. The first you have made too easy and the second impossible for several minutes. Zombies are supposed to stalk and kill humans, using their unlimited lives to their advantage. Here, zombies must spend half the game just getting to the humans, and then it seems they will have to do it all over again when they die. The idea of trials is interesting, but the zombies should not be doing them. If the humans instead faced challenges with the reward of safety at the end, you would have an interesting linear progression infection map instead of an uninteresting mess. Finally, Here is a link to the BIOC infection map database. Look under maps labeled as Linear Progression for something like what I have suggested above. These maps are all well designed and should be the model you try to shoot for.