Ultimate Alien System

Thousands of years from now on... The two neighbouring galaxies have collapsed. All life on Earth has come to an end, or so 'they' thought... "...looks like I'm the last one standing... It was tough... Seeing the entire humanity wipe before my eyes..." "We have to finish that bastard! Otherwise our ancient race has no future!" "Kill him before he wields the Alien System!" "Everything was peaceful... Until he appeared!" "So my entire life is dedicated to runaway from the entire universe? Well... Sounds thrilling!" Will the wielder of the 'Ultimate Alien System' be able to protect his life, the life of the last human, in a vast universe, where he is being hunted by countless monsters and aliens?