left 4 dead

[Disciple3]

Advanced is pretty easy too, expert is actually challenging but you can always use sv cheats and modify the game to make it fucking impossible like

// Hardcore mode. A ton of subtle changes that combine to dramatically increase the difficulty without changing too much of the gameplay.
// Created by Cookie_Jar.

sv_cheats 1

director_intensity_relax_allow_wanderers_threshold _expert 1.0
director_no_survivor_bots 0
director_no_death_check 1

hunter_pz_claw_dmg 20

survivor_crawl_speed 20
survivor_crouch_speed 65
survivor_damage_speed_factor 0.30f
survivor_walk_speed 75
survivor_revive_health 25
survivor_revive_successive_penalty 5
survivor_friendly_fire_factor_expert 1.0
survivor_incapacitated_reload_multiplier 1.4
survivor_incapacitated_accuracy_penalty 0.5
survivor_incapacitated_dizzy_timer 3.0
survivor_incapacitated_dizzy_severity 2.2
survivor_ledge_scales_health 3
survivor_limp_health 45
survivor_limp_run_speed 130
survivor_limp_walk_speed 65
survivor_push 1
survivor_speed 180
survivor_still_penalty 4
survivor_shove_teammates 1

z_alert_range 1200
z_common_limit 300
z_falling_land_forward_speed 220
z_falling_land_hard_speed 220
z_falling_land_speed 220
z_forwardspeed 470
z_hear_gunfire_range 400
z_hear_runner_far_range 900
z_hear_runner_near_range 600
z_mega_mob_size 150
z_mega_mob_spawn_max_interval 800
z_mega_mob_spawn_min_interval 380
z_minigun_overheat_time 15
z_minigun_cooldown_time 3.5
z_pounce_damage 10
z_backspeed 470
z_sidespeed 470
z_speed 270
z_vision_range 600
z_vision_range_alert 1700
z_vision_range_obscured 600
z_vision_range_obscured_alert 800
z_vomit_duration 2
z_vomit_fade_duration 6
z_vomit_fade_start 6
z_vomit_interval 20
z_witch_health 1200

sb_vomit_blind_time 6

pain_pills_health_value 40
pain_pills_decay_rate 0.34