One big thing I'm looking for advice on is tone, since I don't think I did a very good job with that.
Your tone does need a bit of work, especially in the part regarding the spatial distortion, but overall a solid SCP and a solid writer. I mourn the loss of Agent Deadmotherfucker.
a spacial distortion will appear in the center of the area
Just a few spelling mistakes that I noticed. Overall, you could edit a bit of the beginning to seem less repetitive.