I had no fun with this. There's a paywalled "skip minigames" setting, which should tell you how much the dev themself gives a shit about making it engaging. If you expect people to go out of their way to avoid playing your video game, you've fucked up. The game tries to present itself as a sort of sandbox game, but you're railroaded so hard that making it a straight VN would only mean that the player would waste less time wandering to the different locations trying to find where the next bit of progression lies. Even then, it's mind-numbingly repetitive, especially for the first several days.
The writing is ass. I get that English is clearly not their first language, but the typos and awkward/improper sentence structure is the tip of the iceberg. I thought the actual Konosuba anime had a lot of contrived scenarios for random sexual harassment-based humor, but naturally a one-man H-game would surpass it. Every joke is so overstated, including constant clarification of the tone used, in case you just can't glean it from the context and the visuals. Several scenes in the game are beat-for-beat recreations of the source material. The scenes that deviate involve being even more blatantly scummy than Kazuma in canon, which is honestly kind of a feat.
The sound design includes old, stereotypical royalty-free tracks, songs from the anime, and some obnoxious voicelines and sound effects. The game opens with a message to leave sound on for the "ultimate experience," but I had a better time after I muted it. I guess the audio really did reinforce my feelings on the game; it brought it from boring to annoying.
Anyway, the erotic content itself — the only reason you would care about this. It's subpar at best. You can get a footjob from a rich lady OC; grope Aqua in her sleep and look up her dress; look at Megumin's ass (in panties); grope, spank, and secretly eat out Darkness (the last of which involving her believing it's bestiality); trick Darkness into giving you a handjob; get a buttjob from Chris the guise of "there's a storm outside of this outhouse that's making my dick move"; and get a handjob/titjob from a random OC girl in a dream sequence. It's all mid Koikatsu animation.
Thoroughly disappointed by just about everything here. I genuinely wish the developer good luck, because you've made a real uphill battle for yourself to salvage this into something enjoyable. Right now, the Konosuba IP is the closest thing to a selling point there is, and Konosuba R34 isn't exactly scarce.