On paper, I feel I should love the game, but in practice, I just... sorta like it?
The game is fairly short (<2h on a save to complete, took me closer to 3 due to fucking around). The art is pretty good, although reused a bit and with fairly static scenes. The mechanics are genuinely stealth-focused (avoiding >90% of enemies is realistically possible, killing them isn't stricly necessary, fights need to be quick or you'll be overwhelmed). The story isn't overly lore-heavy but does enough to get you invested.
On a more personal note: I like the design of the MC (just on the right side of being big-breasted but before I go into gross oversize territory. Plus, maid) and the girl she's trying to save (who's... petite, but probably strays into "too young" territory for some, despite supposedly being a similar age to the MC) gets some scenes too. I find the mechanics work well with the scenes - You aren't some beast who slaughters goons without a thought until they hit some undefined level of exhaustion and just lets themselves get raped; You're actually vulnerable and turning the tables with a bit of planning and decisive action, and it makes sense why you don't just stand up and slaughter everyone in the room when you wake up at the beginning of a scene. I also really like that almost all single losses aren't instant game-overs, but there are eventual game-overs for repeated losses in later levels, the gallery is available after the first level, and the game doesn't make you watch scenes you've already seen.
It's a solid, short game. Just the only thing holding it back from 5 stars is a certain missing... something. I'm not too sure how to describe it. I'm a big fan of most of the fetishes acted out, but there's just something missing to them that wasn't doing it for me. The lack of voice acting in them is notable, but is understandable for a budget release and hasn't held back similar games. The MC is maybe a bit too much of a blank slate - she's not particularly built upon except for her being an assassin-turned-maid because she has a life debt. Some more backstory to her and stakes for the kidnapping victim might have lent some more weight to the subby/loss scenes. I'm planning on revisiting the game in a few days to see whether that's just me being in a funk or something though.
EDIT: Came back today, felt pretty much the same. It's good, but missing that secret sauce that'd make it great. Also worth noting - the game does have a New Game + mode after you hit a game over so you can level up a few times, but I found it unnecessary, game is perfectly beatable on first playthrough.