On the surface, the game looks promising, interesting premise and unique plot, but, I won't say it's the best.
Indie developing is hard and while making games for free, the player as an audience has to keep in mind, that these games are not made, usually, by 1 person. Mostly, there is a team of 2 or 3 and what I'm trying to say is the team is super solid - both graphical part and sound effects are superb, the animations, the cutscenes give out the eerie atmosphere, which I expected from this game. Not to mention, the quality production and the use of engine is high class. I enjoyed playing a character and plot driven gameplay, which I admire the most, gave me the fulfillment while going around the mysterious house.
I won't spoil the ending or the plot, but that's the one part, where I got divided. On one hand you have this brilliant idea to make a contract killer do this job and face the consequences, going into the house without knowing what to expect and trust me I got surprised big time, to rate the surprise, it was like playing Outlast and realizing I can't escape this place and I am super stuck, that part was applaudable, but on the other hand the towards the ending felt rushed. The ending was fast and it did not fill like the first part of the game. Now, I understand, myself being a gamedev, that ending's are hard to do, but, I would say the first part of the game could have been a bit longer, maybe 30 more minutes and then the ending (also adding maybe 15 more minutes and some underground level) would make this game literally the best. I am saying this, because I want truly to see the continuation of the game or rather making the existing product a bit longer, with more plot and not so rushed ending.
Breathtaking atmosphere, great visuals, incomparable plot, matchless character design and mechanics, but unfortunately, not a great ending. My suggestion is to work on that only part of this game, because the rest is a piece of the most delicious cake.
Good Luck.