Cool level design, cool action, top level base defense for a game jam.
I encounter some bugs (like half spawned zombies that can't be hit or move), weapon switching didn't work after a time and the kill counter in the quest displayed stopped. I still had some fun with it, awsome 3D-work.
One QoL features would be the visibility for objects behind trees. Maybe figure that out as a training for the next jam? Like transparency for trees or illumination for objects?