• Fight a variety of enemies from armored zombies to web-spinning, acid-spitting spiders to skeletons carrying lit bombs
• Build forts using metal, wood, spikes, and explosives
• Purchase and upgrade various arrows with diverse features. Some will chain your enemies together, others pierce through, and another type explodes on contact (there's more than those three).
Ragdoll zombie defense
In some isolated factory far away there is a person who builds forts out of crates and then fights off waves of floppy-ragdoll-zombies with their trusty bow and arrow.
This is your chance to BE that person. At the start of each level you have an opportunity to build a base with supplies specific to that level. From then on out you just need to survive until the time is up... easier said than done!