The I Am Legend challenge uses the Horde night and barricade hurt zombies mods to create a nightly horde night base defence. The zombies increase by 2 every night, starting at 10, so day 30 will have 68 zombies, day 31 will have 71 etc.
There are a bunch more mods, check the 'mod combos' section of the mod video below to find out more:
Mod video:
https://www.youtube.com/watch?v=Vv9sz6gIyCE&t=1934s&ab_channel=Ricksdetrix
Sandbox settings:
There are lots of flavour mods, I recommend using more loot settings mod to reduce the loot to the lowest level, and or time decreases loot and time decreases car condition. Below are the important options.
Time: 5am (ESSENTIAL)
World: Gas stations: empty
AI director: Helicopter: Never (ESSENTIAL)
Loot Rarity: Lowest setting for all but literature (I recommend using more loot settings mod to have the lowest loot)
Character: Rear vulnerability: Medium
Vehicles: Gas consumption: 3.0
Zombie Lore:
Transmission: saliva only
Environmental attacks: ticked/on
Drag down: Off
Advanced zombie options:
Pop multiplier: 1.0
Pop starting multiplier: 0.02
Pop peak multiplier: 1.0
Pop peak day: 28
Respawn hours: 48
Redistribute: 0
horde night hour: 23
First horde night: 0
Horde frequency: 1
Horde starting count: 10
Horde increments: 2
Horde spawn distance: 60
Destroyable world fences:
wooden: 1000
military: 2500
chainlink: 1500
black metal: 2000
wooden straight: 1500
portable: 1500
barbed: 2000
enable modofied zombie thump behaviour: ticked/on
All amount to thump walls set to 1
Stronger furniture barricades: multiplier: 2
KYR Real weather: minimum temperature -20, variation in seasons 25
Barricade hurt zombies:
Barricade damage: 5.0 (ESSENTIAL)
Barricade type: all
Random sprinters day and night:
Day: shamblers 100%
Night: sprinters 100%
The calm before the storm:
Horde radius: 90
horde distance: 90
cooldown: 16 (ESSENTIAL)
calm phase: 0 (ESSENTIAL)
Storm phase: 7 (ESSENTIAL)
Music:
Smash bros melee target theme
0:00
Buckshot Roulette OST
00:28-
04:25,
08:07-
10:03 and
14:20-
16:25,
48:57-
50:47,
53:23-
55:28,
01:18:24
Fable 2 OST
04:27-
08:07,
10:03-
11:23 and
16:25-
18:43
The Binding of Isaac - Danny Baranowksy
11:23-
14:20
Zomboid OST
18:43-
22:30,
26:04-
30:18,
38:01-
39:59,
1:53:13
wish you'd never left - youtube library
22:30-
24:08
dead forest - brian dolger
24:14-
26:04
Legend of zelda twilight princess ost
30:18-
31:21
RDR2 ost braithewaite manor
31:26-
37:44
RDR2 lonesome town
39:58-
42:50
RDR2 do not seek absolution
42:50-
44:38
RDR2 deformed fight
44:40-
46:01
RDR2 prologue fight
46:20-
46:54
19th floor - bobby richards
46:54-
48:48
heaven and hell - jeremy blake
50:46-
53:23
ten inch spikes - jeremy korpas
55:38-
56:38
lugias song pokemon 2000
56:38-
58:20
castle crashers winter bliss
58:33-
01:01:26
Oblivion auriels ascension
01:01:27-
01:04:26
Oblivion defending the gate
01:04:29-
01:05:39
twelve speed - slynk
01:05:40-
01:07:17
oblivion all's well
01:07:17-
01:09:34
the long dark ost
01:09:34-
01:15:02,
02:00:16
halo reach ost
01:15:02
midnight sun - dyalla
01:21:50
smash bros melee ost
01:24:39,
02:05:47,
02:11:00,
02:13:05,
02:22:05,
02:24:54,
02:48:29
chris christodoulou - coalscence
01:29:03
chris christodoulou - dew point
01:35:21
chris christodoulou - distrometer
01:38:43
Deep rock galactic decieved by light
01:45:28
James bond nightfire
02:03:59
spyhunter 2 ost
02:09:23,
02:15:23,
02:32:07-
02:42:42,
02:45:40
oblivion minstrels lament
02:19:34
oblivion bloody blades
02:21:00
halo odst rain deference for darkness
02:28:05
persona 5 last suprise
02:29:15
Mass effect reflections
02:30:22
doctor momentum - slynk
02:42:44
Days 1-10:
00:00
Days 11-19:
26:10
Days 20-29:
38:40
Days 30-41:
56:45
Days 42-50:
1:07:22
Days 51-60:
1:21:57
Days 61-70:
1:33:02
Days 71-89:
1:45:34
Days 80-89:
2:01:50
Days 90-100:
2:21:45