I've had it for a bit (~55 hours of playtime and a disclaimer of not being good enough to finish the 3rd region of the game) and while i really, really want to love the game based on what you mention (thematic dark fantasy pixel art + ambient music) as an action roguelike (as compared to text+tile based roguelikes) i feel it unfortunately falls short compared to others in the genre in what I'll explain further:

Action roguelikes are well known for progress between runs usually through the form of unlockables that are revealed as progress/achievements are hit on certain runs, unlocking content for future runs. However, in terms of Vagante's unlockable progression, you see unlocks in terms of the 5x5 single-pick modifier that occurs during character creation (which is the same between classes), as well as the classes of

Minor unlocks includes new alternate music and I believe a hard mode if you complete the game once (again i'm bad so i haven't achieved the last unlock) Compared to games such as of course Binding of Isaac, Noita, or Enter the Gungeon (the last game which I have my own quibbles with) gameplay between runs and unlockables are somewhat minor and unsatisfying. I can't fault the devs for programming less than the above games, but run progressions between games seem almost meh outside of the new classes.

(this may be subjective based on personal skill but this is my analysis playing between the different characters) Within the classes, while there are definite differences between them, and through their leveling progression, to make them unique and allow for class-unique builds, boss difficulty between the classes vary greatly and are more tedious with some classes than others (unless you cheese)

Here's some of the positives I like about the game though

• Co-op with friends is extremely fun
• The randgen modifiers on weapons and armor are very cool and classic to the text and tile/ascii based genre. The different angles of attack: overhead to forward attack arc for things like axes, clubs, knight-upgraded swords, as opposed to stabs with unclassed swords or daggers, makes the use of weapons and their characteristics unique rather than more damage/different stats
• Also the unidentified potions and scrolls mechanic also harkens back to text and tile/ascii roguelikes and adds a novel element between playthroughs (Make sure what you're drinking is a health/stat up potion rather than a poison/stat down potion!)
• artstyle, soundwork, and music really gets the dark fantasy mood down-pat, the character select screen outside the dungeon with the crackling fire during the middle of the night is definitely dungeon-crawl-cozy vibes
• class builds and upgrades when leveling are small little mechanics that twist the character's playstyle in such a way that each upgrade alters the way you play and interact with the mechanics of the game without getting too wild as to undercut the existing mechanics of the game: mage doing self-enchantment with spells or mix potions, knight upgrading sword techniques to have an overhead to foward slash/Link-esque downward aerial sword attack or being able to block/riposte attacks, rogue with stealth mode, throwing knives, angling bow attacks that ricochet

While Vagante certainly isn't a bad game and in fact bridges the gap between text roguelikes and action roguelikes and is an occasional download and replay on my library, due to design constraints and better execution of action roguelike elements in other action roguelike games, Vagante is a charming if overshadowed addition to the genre that is an extremely enjoyable game especially with friends, if somewhat unmemorable.

(Yeah if its like 3 bucks its worth it compared to base price of 15 bucks, which i guess this off-the-cuff review is more appropriate for lmao)