The Alien Visitor War System Helps Me Build an Apocalyptic Paradise

In the last days, aliens are coming and alien species are invading! How do humans face it! ? Can the light of humanity reappear in the apocalypse where monsters are rampant? ? Can the little guy counterattack? Camping step by step, attacking cities and fortresses, from plains to mountains, from land to oceans, from one continent to another, human civilization will eventually continue. War system + explosive troops + real-time strategy + sand sculpture + slow pace + journal-style writing + custom weapons This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.