(I'm gonna skip the point list)
The game has some problems with movement only sometimes rotating the movement vector towards the camera position, that was probably the bigger enemy out of the two. The sky is way to bright compered to the rest of the level and actually while at this point, the level is huge but it's mostly just flat and empty plane no trees, rocks, paths. SFX and movement are especially important for first preson horror games to make the player connect to the person, so some footstep sfx, fast breathing for running and low stamina and making the player accelerate a little slower to give him some weight and making him turn a little more slowly when running to really sell the effect. A optional headbob and leaning while turning would also be pretty nice.