I'm Fighting Guerrillas in the Wasteland

"Ding! It is detected that the host is facing a fatal threat, and the apocalyptic survival system is forcibly activated!" "Get the novice's life-saving trump card: absolute defense for 3 seconds!" A sudden alien invasion turns the earth into a slaughterhouse for the Moar people. When Li Yang woke up, he became the cannon fodder bait destined to be abandoned in the 8156 base station! With no protective armor and only a broken gun, facing the three-meter-tall alien monster, everyone was desperate and waiting to die. But Li Yang didn't panic, because his system was awakened! Kill the low-level argon soldiers, plunder the energy core, and upgrade the quality of the photon gun! Complete the desperate counter-attack, unlock the gene-enhancing potion, and resist the mecha physically! Turn on the base construction module and build the strongest doomsday fortress! While others were still killing each other for a mouthful of moldy bread, Li Yang had already led a fully armed mechanical army to kill through the Mo Argon starship! The commander of the Moar people collapsed: "This is not earthly technology at all! What kind of monster is he?!" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.