Subscribe to download
Impossible Left 4 Dead but it is Possible

The zombies doesn't come like a flood and special infected doesn't respawn like ♥♥♥♥.
Here's the Impossible one https://steamproxy.net/sharedfiles/filedetails/?id=1716864752
Added cvars :
ammo_assaultrifle_max 900
ammo_autoshotgun_max 225
ammo_grenadelauncher_max 45
ammo_huntingrifle_max 225
ammo_minigun_max 900
ammo_shotgun_max 125
ammo_smg_max 999
ammo_sniperrifle_max 225
ammo_turret_max 900
chainsaw_damage 500
chainsaw_hit_interval 0.05
z_tank_grenade_damage 3000
grenadelauncher_radius_kill 360
grenadelauncher_radius_stumble 500
pain_pills_health_threshold 5000
pain_pills_health_value 5000
adrenaline_duration 45
adrenaline_health_buffer 50
adrenaline_run_speed 400
r_flashlightfov 100
survivor_burn_factor_easy 0.2
survivor_burn_factor_expert 3.2
survivor_burn_factor_hard 0.8
survivor_burn_factor_normal 0.4
survivor_friendly_fire_factor_expert 4
survivor_friendly_fire_factor_hard 1
survivor_friendly_fire_factor_normal 0.5
survivor_friendly_fire_factor_easy 0.1
first_aid_kit_use_duration 2.5
first_aid_heal_percent 10
first_aid_kit_max_heal 250
survivor_incapacitated_reload_multiplier 0.5
survivor_incap_decay_rate 12
survivor_incap_hopeless_decay_rate 154
survivor_revive_duration 2.5
survivor_allow_crawling 1
survivor_crawl_speed 50
rescue_distance 1
rescue_min_dead_time 1
survivor_limit 5
z_fallen_max_count 3
z_speed 420
z_common_limit 40
z_mob_spawn_finale_size 30
z_mob_spawn_max_size 15
z_mob_spawn_min_size 10
z_mob_spawn_max_interval_easy 30
z_mob_spawn_max_interval_normal 24
z_mob_spawn_max_interval_hard 24
z_mob_spawn_max_interval_expert 18
z_mob_spawn_min_interval_easy 10
z_mob_spawn_min_interval_normal 10
z_mob_spawn_min_interval_hard 10
z_mob_spawn_min_interval_expert 10
z_mega_mob_size 40
z_mega_mob_spawn_max_interval 42
z_mega_mob_spawn_min_interval 36
z_wandering_density 0.06
z_fallen_kill_suppress_time 1
z_vomit_interval 8
z_charger_pound_dmg 60
z_charge_max_force 1800
z_charge_duration 10
z_charge_start_speed 500
z_charge_prop_damage 1000
z_charge_max_damage 1000
z_charge_impact_radius 250
z_witch_damage 30
z_witch_relax_rate 0.25
z_witch_anger_rate 0.5
z_witch_damage_per_kill_hit 15
z_spit_interval 12
z_tank_speed 400
z_tank_throw_force 1200
tank_swing_interval 0.3
z_tank_attack_interval 0.25
tank_swing_miss_interval 0.3
z_tank_rock_radius 300
z_spitter_speed 460
z_spitter_health 50
tongue_range 1500
tongue_fly_speed 1500
tongue_choke_damage_amount 40
tongue_victim_max_speed 175
z_jockey_health 50
z_jockey_ride_damage 16
z_jockey_ride_damage_delay 0
tongue_hit_delay 2
tongue_miss_delay 2
z_hunter_health 50
z_leap_interval_post_incap 2
z_leap_interval_post_ride 2
z_charge_interval 0.1
z_charge_max_speed 500
z_pounce_damage 20
z_pounce_damage_delay 0
z_gun_swing_interval 0.5
z_cough_cloud_expire 3
z_throttle_hit_interval_easy 0
z_throttle_hit_interval_normal 0
z_throttle_hit_interval_hard 0
z_throttle_hit_interval_expert 0
z_hit_incap_factor_easy 0.1
z_hit_incap_factor_normal 0.5
z_hit_incap_factor_hard 1.0
z_hit_incap_factor_expert 4.0
z_hit_from_behind_factor 1
z_attack_interval 0.5
z_survivor_respawn_health 80
z_gun_swing_coop_max_penalty 1000
z_gun_swing_coop_min_penalty 1000
z_non_head_damage_factor_multiplier 1.0
z_head_damage_causes_wounds 1
z_use_next_difficulty_damage_factor 1
z_friendly_fire_forgiveness 0
sb_all_bot_game 1
sb_allow_shoot_through_survivors 1
sb_vomit_blind_time 0
director_per_map_weapon_upgrade_chance 1
survivor_damage_speed_factor 1