Here is an overview of the game, via Neowiz:
Employing classic roguelite elements alongside a persistent, point-based research tree, players will unlock new items and skills with every playthrough. With no shortage of weapons and attacks to choose from, players can easily adapt and gear every session towards their own unique playstyle.
Metal Unit includes two difficulty modes, Normal and Hell, tons of difficult bosses to conquer, more than 50 unique enemy types, and hundreds of obtainable items to utilize. Metal Unit is also currently available on Steam. The game supports English, German, Russian, French, Spanish, Japanese, Korean, Simplified Chinese, and Traditional Chinese.
Watch the launch trailer for the Switch version below.