I Create the Apocalypse in the Magical World

Traveling through a magical world, starting with a broken leg, and facing a bloodthirsty monster, what should you do? Don't panic, the red alert system is activated! Short of money? Kill monsters and explode the "magic core", unlimited resource conversion! No equipment? Barracks, heavy industry, and air command bases can be built with just one click! The enemy is too strong? You have magic shields and I have magnetic blast infantry. You have the Gryphon Knight, I have the Anti-Aircraft Crawler. You have the Forbidden Mage Group, and I have the long-range V3 rocket. You have the World-Destroying Dragon… Sorry, my Apocalypse Tank is already thirsty! When the iron hoof of technology steps onto the magical land, when the torrent of steel collides with the dragon army. The only rule is - everything within my range is the truth! (There are a lot of magic changes)