1-10( Ordinary zombies)

This class have nothing too special about them, they are just ordinary zombies who have advanced physique and are capable of constant resilience and are never truly dead until their heads are gone.

Level 11-20

This class of zombies are now more interesting, they get stronger the more they are hit, they have extremely high HP and are capable of regenerating from extreme conditions and the only way to kill them is to remove their heads.

Level 21-30 Zombies.

This class of zombies have the same buffs as the others but with a twist, they can create powerful zombie regions.

In their zombie regions they can continuously spawn small types of zombies, making it harder for them to kill.

Level 31-40

These zombies can do the same thing as those weaker than them but they are fully capable of advanced intelligence.

They can communicate with humans fluently and are even considered 5% smarter than humans.

Level 41-50

These zombies can do the same thing as those weaker than them but their unique feature remains that they can awaken a talent of their own.

Level 51 and above.

Dive in and find out?

Note: Zombie levels can be identified by the horns on their head, still shaping up this power system but you'll understand in future.

And also, a zombie's size doesn't have anything to do with it's power, a level one could be as tall as a skyscraper and a level 50 as short as a five year old.