I remember the first time I played l4d, I was scared of the witch, because I thought that the moment you shine the light, it will go mad. But the real difference with lights on is only 1 %... I mean the survivors keep telling ALL the time to turn your light off, so I wish I could fix this. Usually, I play singleplayer.
I have been spawning witches and testing these commands (they require sv_cheats 1), but I cannot figure out what they are doing and what they mean
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z_witch_allow_change_victim 1
z_witch_anger_rate 0.2
z_witch_attack_range"60
z_witch_berserk_range 200
z_witch_burn_time 15
z_witch_damage 100
z_witch_damage_per_kill_hit 30
z_witch_discard_range 2000
z_witch_flashlight_range 400
z_witch_health 1000
z_witch_hostile_at_me_anger 2
z_witch_max_retreat_range 2000
z_witch_max_threat_time 7
z_witch_min_retreat_range 50
z_witch_min_threat_time 5
z_witch_personal_space 100
z_witch_relax_rate 0.05
z_witch_retreat_exit_hidden_duration 10
z_witch_retreat_exit_range 1000
z_witch_retreat_min_duration 10
z_witch_speed 300
z_witch_speed_inured 200
z_witch_threat_hostile_range 600
z_witch_threat_normal_range 300
z_witch_wander_hear_radius 72
z_witch_wander_music_max_dist 2000000
z_witch_wander_music_max_interval 20.0
z_witch_wander_music_min_dist 90000
z_witch_wander_music_min_interval 3.0
z_witch_wander_personal_space 240
z_witch_wander_personal_time 10
I have been trying to find a way, for the flashlight to quickly (if not instantly) startle the witch when you shine on it + from long distance.But I can't figure it out since 5 days 
I searched for addons and plugins but I Am Suprised, I couldn't find anything.