Armored Cavalry, survive in a world full of mods

{Micro-magic self-created world view, with a large number of original mods}
Once you are transported to a medieval battlefield, you will immediately be trapped in a dense enemy formation, which is a life-or-death situation.
But it doesn't matter. At the critical moment, a magical interface appears before my eyes. Next, I will surely be able to activate the simple mode and easily reach the peak of my life. It will definitely be of great help to me, right? ...
After a near-death experience, Xu Ning finally realized—this thing's only function was as a display screen!!! From now on, he had to rely on himself...
………………
He traveled through a chaotic battlefield wearing a full set of cavalry equipment, but it didn't matter. He successfully survived on the battlefield. Mount & Blade II was just an ordinary medieval world, not so uninhabitable... Until he saw those long-eared elves, that's what he thought...
(The protagonist's initial image is based on the elite armored cavalry in Mount & Blade II. This is a story about armored cavalry fighting against alien races to save the world, with certain fantasy elements.)