Zombie Safari 2

Zombie apocalypse ended a long time ago, leaving only ruins, but there is no peace for the poor zombies.
From their hiding places crawled a crowd of wild office workers, who not dared to engage the enemy in the midst of war. But life in fear in underground drove them crazy, and now its just mindless monsters, driven by desire for revenge.
Our hero has nothing left but take up arms and stop the invasion of crazy managers!