Great start, love lewd games with task/puzzles while having a threat chasing you. The level dose a great job at feeling like a maze. And provides a good amount of land marks to know where you have been and where you haven't. Has a good shop to buy item and such that dose help make the game more easy to play.
Haven't found any bugs in the hour I played. So to a new player you guy did a grate job.
I think a good quality of life to add to the game. Is to give a very small amount of visibility in the dark. When you don't have a flash light on or it ran out of battery in dark area. you will literal walk into a wall and not know if you are or not (its happens more in the hard mode of course).
another making Kar know if you are right behind her (I'll say 3ft or 2ft if that make any since). and finally more clear on what the items dose. for example buying the horny spray. it only tells you it stuns Kar and raise her horny level. but it doesn't tell you if you spray it on her. you can do lewd stuff with her if you click her.
I have one change I would recommend. I think easy should be medium and hard be medium and make a new harder difficulty. The reason being that on easy you can get the latter at spawn and the exit can spawn just as close and the level is over. Leaving no challenge for the player ( or maybe I'm just lucky).
Now what would be a cool add on in my opinion would to give Kar a ability to spawn a smile face (like hers) to give away your location (maybe put this in medium and hard or just hard would work). She will put it down at the last place she saw you.
Another add on that could be fun is crawling spaces that only the player can go under. or have the player be able to go under the blockades.( if added to not make it overpowered to craw under barricades have player move very slow. so it will cause narrow escapes.)
this is my last idea, if you spray Kar once her horny level builds up. and if she grabs the player she takes lead and dose something lewd to you. instead of the normal bad ending. and the higher the horny level the more lewd thing she will do to the player.
giving two different type of lewd encounters. one where you take lead and the other she take lead. that's all the ideas I think would be a nice add on. but of course do what ever you guy feel is fun and work for you. keep up the good work Ill be waiting for the next up date.