- it should beat and throb on closed doors or windows, when you close it directly in front of it.
- it should at least try to search for another entry not automatically know and sprint to the next best entry. (go into "investigation mode" or maybe a separate "investigate object"-mode)
- same category (but here zeds act too dumb): zeds going around instead of trying to run through/fall over fences when in "aggro" mode