Stellar Blade is a blast. For external reasons, it'll likely be one of the most talked-about games of the year, so for the sake of brevity, I'll avoid those obvious points and instead get onto what the game itself has to offer.
The world of Stellar Blade is both beautiful and terrifying. The game strikes a nice balance between gorgeous aesthetics in environment design and brutal (and often bloody) enemies and combat. The two meshed quite well for me though, and this pleasant combination was helped by an absolutely phenomenal soundtrack that adds to the future/post-apocalyptic vibes in every level.
Combat is great. While I wouldn't venture as far to say that Stellar Blade is a soulslike, the difficulty in both random enemy encounters and boss fights is comparable, if not quite to the level of intensity that From Software games generally boast. Nonetheless, I found Stellar Blade to be a compelling and rewarding experience all on its own. The combat is quick and dynamic, and relies heavily on its dodge and parry mechanics, which it utilizes to (mostly) great effect. It functions as a risk/reward system that punishes the player severely for mistiming a dodge or a block, but it opens windows to decimate the enemy as well.
World exploration is mostly excellent, with a scanning system that reveals potential threats and secrets in a wide range. Numerous chests, costumes, and power-ups litter the multiple maps, making exploration and side quest-completing very worthwhile. Platforming is enjoyable, but wonky aerial movements and overly-precise detection zones for ropes and ladders can often contribute to frustrating retries that come off as cheap and unnecessarily difficult. It doesn't break the game, but it definitely detracts from an otherwise great setup.
In terms of the story, Stellar Blade walks a fine line between dark and melodramatic, but never quite ventures into standard levels of cheese found in your average JRPG. The characters are well-written and (mostly) well-acted. I can't say much more without spoiling the story, but suffice it to say that it worked for me, and you'll simply have to experience it for yourself.
In short, Stellar Blade is an incredibly promising start to what I hope will become a long-standing franchise. Its combat is excellent, its story and characters are loveable, and apart from a few mechanical hiccups, the world traversal makes for a very engaging experience. Whether you're a fan of tough, soulslike action games or are just looking for an awesome new game to drop 40+ hours into, definitely give this one a try.