I left a comment on your video but I'll leave one here as well.
First, thanks for playing the game Jon Jon!
Secondly, the game was created over the course of a week and a half as a gag to make fun of EDP445. So there's a lot of things I didn't create like a checkpoint system because of the game only having one objective.
The AI is very basic. He randomly spawns in one of the rooms at the beginning of the game. If he sees you, he will constantly run to wherever he last saw you. So if you are trying to get rid of him, best thing to do is find some corners to hide around and wait a little bit. He will probably run to the corner, hang out for a couple of seconds, and then randomly choose a new room to run to.
Also, when searching for evidence, be sure to check out the entire room. Sometimes the evidence is on the right side of the room and on the floor so it's a little bit harder to see.
Hope this helps! Again, if this was a game that I planned on updating or making into something better, I'd put some more time into it. But it's just meant to be a gag game. If people really like it though, maybe I'll put some more time into it.
Thanks for playing!