Blending the top-down action RPG combat of Diablo with a futuristic sci-fi setting, upcoming Steam roguelike game Gatekeeper is one I've had my eye on for a while. While its melee focused classes lean more towards the Blizzard ARPG in how they play, however, its newest addition feels much more akin to Helldivers - especially Arrowhead's first, also top-down outing for that series - with a satisfying shotgun and the ability to call down satellite bombardments.
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New sci-fi Diablo style roguelike unveils explosive support mage class