Nobody Saves the World: Frozen Hearth

Summary pulled directly from Steam - Some text may only be applicable to Steam platform

In a forgotten region deep underground, warriors compete for riches and glory. Only a master of forms and customization can earn the ultimate rewards for themselves. Do you have what it takes??

Meet new friends and rivals as you compete in The Tempering, a series of puzzles and challenges that will push your skills and creativity to their limit. Unlock the new Mechanic and Killer Bee forms. Use their powerful abilities to earn the ultimate glory and help save the world!

FEATURES

New AREA: Explore a forgotten region far beneath the world's crust with new friends and rivals waiting to be discovered.
New CHALLENGES: Compete in a series of challenges and puzzles designed to push your combat skills and customizing creativity to their limit.
New FORMS: Unlock the turret-building Mechanic and the small-but-deadly Killer Bee, each with their own new quests and abilities.
Co-Op: Like the main game, the entire DLC can be played in local or online co-op.
Mini-Golf: I heard there's mini-golf in this one, sounds cool.