Level gating leads to the game being less fun... so today, for a demonstration, I recorded my play session to show how to exploit the mechanics to get a constant stream of Zombies to kill, how to use their pathing and AI to keep yourself from dying, and how easy it is to protect your staging structure. Some might consider almost a straight hour of zombie face pounding fun, I do not.
All settings are default except for hoard night, which is doubled, and air drops, which are lowered. I cranked the gamma correction so you can more easily see the video when it's nighttime, and I try to remember to turn on my headlamp to more accurately represent normal play. Over the course of the hour, I think I went up 4 or 5 levels. Again, I don't find this play style fun, I find it nessisary so that I may get the perks I want to play the game the way I want.