Doomsday: the System Asked Me to Pick up Treasure Chests

Traveling to the legendary world where cyborgs are spread all over the world, Luofu said that he was not worried at all, after all, he was the king of war, until... Alien warships came through the sky, and the zombies of the earth began to evolve. Don't be afraid, I have a system! Ding, I picked up a gold treasure chest, got an M4 assault rifle, and a special reward of super serum! Ding, I picked up a diamond treasure chest, got a hero-level weapon AK47-Wuying, and a special reward of purple melee weapon Tang Dao-mithril! Ding, if you pick up a king's treasure chest, you will get the SR-level ability 'Ice', and a special reward of the one-time skill All Things Grow! Ding, I picked up a colorful treasure box and got a mythical beast Groudon, an SSR-level superpower space, and a special reward of a Zanpakutō 'Ryuen Wakahara'! Well, what should I say, I have the system in hand, you all follow me! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.