Zombie apocalypse

The entire world has been plunged into a zombie apocalypse for 10 years now. All abandoned infrastructure has been destroyed and overgrown, and zombies roam the cities. There are many bunkers in the world, both abandoned and inhabited; abandoned places are often looted. On the roads outside the cities you can sometimes come across checkpoints with the military or with zombies.

Chance to distract zombies (make noise in another place if they can't see you) 80%
Chance to distract zombies (make noise in another place if they seen you) 5%
The chance of getting hurt by shards of glass without clothes is 95%.
There is a risk of injury from shards of glass when wearing thick clothing is 2.5%.
The chance of getting a deep wound and shards of glass on your feet if you step on shards of glass without shoes is 100%.
The chance of getting a deep wound and glass shards in your feet if you step on glass shards while wearing shoes is 0%.

Regular zombies (regular rotten walking meat, not particularly smart or strong)
Zombie runners (the same as normal ones, but they can run fast)
Radioactive zombies (strong running zombies that live in radioactive zones and emit strong background radiation)
Fat zombies (normal zombies, but fat, which makes them harder to kill)