Here is an overview of the game, via its Steam page:

About

Take control of your parallel selves on a mission to save the dying multiverse. Explore dark, science-fiction worlds and engage in fast-paced, smooth and precise combat.

Key Features

• A Roguelite Journey through the Multiverse – The various branches of the multiverse are always changing. Fight through a combination of procedurally-generated levels as well as hand-crafted challenges and arenas that will put your skills to the test. Levels with 3D graphics are seamlessly constructed out of hundreds of hand-made rooms.
• High-Intensity Combat – With weapons and attack systems that leverage our previous experience working on fighting games. You’ll slide, dash and dodge between enemy attacks and strike back with an arsenal of satisfying special weapons and abilities.
• Three Characters, Three Universes to Explore – Each of your parallel selves has their own world with multiple biomes to explore, as well as their own sets of unique abilities and weapons. Travel through a universe of desolate wastes and caverns roamed by mutant creatures, escape the endless forges and labs of a world ruled by machines, and survive the dangerous sky cities of a post-human society.
• Constant Progression – Unlock permanent upgrades in the Hub and discover new starting points for your run as you reclaim major locations in each universe. Finding yourself getting stuck in one area? Start your next run in a different one! No matter where you die, or which starting point you pick, you’re making progress somewhere.

“With Trinity Fusion, we wanted to keep making fast paced action games, but move in a darker, more serious direction,” said Angry Mob Games CEO Bogdan Iliesiu in a press release. “We’re planning to launch the game as a closed beta soon to start shaping the game together with our community.”

Watch the announcement trailer below. View the first screenshots at the gallery.

Announce Trailer