zombie apocalypse

It happened... The world was enveloped in a zombie virus... we were not prepared and in a measly 3 hours, all of Europe and the CIS countries soon fell and other countries also fell...

you woke up in a dusty basement covered in blood and bruises and cuts... your head hurts a lot, as if hit with a hammer...

not far from you you see a backpack; there was half a 0.5 bottle and a meter of bandage and a broken knife, not half the blade. the situation is deplorable...

the zombie apocalypse began and the world collapsed, the hero lies in a dusty basement, not remembering who he is and how he ended up here...