This is awful, and I'm not trying to be mean. I want you to take my criticism and use it to make your game scary.
First of all I would like to tell you why the game Slender works,
Slender is 90% suspense, it uses the player's imagination against them, most of the game is player scaring themselves. The entire game is spent walking through a dark forest alone with your flashlight throwing shadows around, was that Slenderman in the distance? Oh, nope, just a bush. The scary part is not knowing where Slenderman is, it appears in the distance watching you through the trees but you can't keep an eye on him because the game forces you to look away or you lose. The jump scare at the end could be called the icing on the cake and only serves to make you cry.
If you know where Slenderman is every second of the game then you lose every amount of horror the game had, Slenderman stops being a creature that could be right behind you at any moment and becomes an annoying object you need to maneuver around.
Apart from that main problem I just described I also found a few bugs/problems, you should know that even the smallest problem can completely break immersion and ruin the experience for the player.
The footsteps sound like I'm walking on metal grass, and as mentioned by someone else the sound continues to loop after death. Pressing two keys to walk diagonally produces a 200% increase in volume for the footsteps, most likely caused by the same sound being played twice.
The shadows weren't bad and actually interested me, however a lot of objects had shadows that were much larger than itself. As I stated before about not knowing where Slenderman is (which is the most important part of the game), this is impossible while the ambient lighting is semi-transparent and basically renders the flashlight aspect useless except for making things brighter, I could have completed the game without it. Drowning the view in complete darkness makes the player have to constantly look around to find his way and makes Slenderman appearances startling.
You should eventually remove the message boxes as they kill immersion, just allow for picking up and moving on, the game needs to be fluid with a constant danger.
I would also recommend fixing up your text in the topic and in-game. I'm guessing English isn't your first language but you can get a friend to help you write it. You need to fix grammar/spelling issues and remove unnecessary capitalization. Also regarding your topic I would remove the loading screen screenshot and the perhaps the death screenshot, they feel unnecessary to me (though this is strictly my opinion).
I had started my own 2D Slender game and this further makes me want to continue, so I hope you take my criticism fairly and put it to good use so I won't have to end up making it