Notice Distance: On Code Line 38, You can find the notice distance, if you want the killer to know where you are at all times or just not realise your there at all for some reason, go there and change the value of it.

Damage Given to the player: On Code Line 69: You can find the value of damage taken when the killer hits you, If you want the killer to be a one-shot kill or be so weak they can't even deal damage, go there and change the value.

Fix The Footstep Sounds!: On Code Line 130/129, you'll find the code for the footstep sounds! For some reason the code says to destroy the sound right after playing it, which causes the footstep sound to not play at all. So delete code line 130 (JeffTheKillerHeadFootStepClone:Destroy();) and you'll fix the problem! (For adding the footstep sound itself, see Number 6.

Humanoid Properties: Starting on code line 243, the script lists off values of the humanoid, These are listed in the actual humanoid (ColdBloodedKiller) but for some reason are also changed in the JeffTheKillerMain script, presumably due to something not working right when just using the regular humanoid and leaving it at that. (Basically if you want to change the properties of the humanoid like health your gonna need to go there.)

Running Speeds: On Code Line 225 there is a value that sets the speed of Jeff when he runs, you get the drill just change it to whatever you want. Regular walkspeed is 12 (Walkspeed is listed a little soon after the run speed in the code, not the one right next to it but a little farther in the code.)

Sounds and Animations: In the head and knife parts, there are sounds. you know already, just change it to whatever you like. Same for animations but you can find them in AnimateSauce and through a choice of animation's StringValue. (P.S. the last image is just showing the Scene Sounds in the code as i don't wanna add the sound as an actual sound. you add it i think into the model instead of the head. I kinda forget.)

Thats all! Have Fun customizing your own Jeff The Killer Model!