SYSTEM FOR ME IN THE APOCALYPSE WORD

One day all over the world, a tower appeared out of the underground, from that tower appeared a monster that killed and slaughtered all the humans they saw. and Arthur had lost a dear friend that day. but before death came to him, a voice entered his head {SYSTEM HAS BEEN INSTALLED} {STARTING A PERSONAL DEFENSE PROCEDURE} (STARTING PROCEDURE-EXTERMINATE ALL MONSTERS)