Standard

• Fall heights are more akin to Mirror's Edge rather than Spiderman.
Below 5~ meters = safe
Between 5~ to 7~ meters = painful
Between 7~ to 10~ meters = dangerous
Above 10~ meters = deadly
Parkour rolling is enabled from the start and the skills that normally enable them now instead heavily reduce fall damage from bad landings.

• Sneaking, swimming and strafing is faster.

• Hard increases damage taken and dealt, Nightmare is also no longer a slogfest of sponge-whacking and instead has intense damage dealt & taken for all parties.

• TicTac has been replaced with Wallrunning, it functions how you'd expect and you can also press the key opposite of the wall you're running on to initiate a walljump.

• Running & Combat stamina is much higher but take longer to regenerate.

• Food items heal you over time for considerably more than vanilla, there is also a new food item called Booze to wash down the baklava and burgers with.

• Brutal Grapple unlocks a frontal grapple.

• Upgraded dropkick unlocks a fast getting up animation.

• Takedowns use a slower animation at first and upgrades to the neck snap animation with Ultimate Combatant.

• Arrows fly faster, especially from the standard bow.

• The grappling hook has a 25s cooldown and a 30% reduced reach.

• Audio occlusion has been improved greatly, which means you can for example hear explosions around a corner or virals climbing a building near you.

• You can check your wristwatch at any time by pressing Y, can not be done while holding a firearm, while inside a safezone or before the first main mission is finished - hardcoded limitations.

• Biters are more aggressive.

• Virals spawn more often, and completely replace the random spawning of Suiciders(you may still see Suiciders in handplaced locations).

• Toxic zombies no longer spawn under normal conditions, enabling the player to use fire weapons without punishing them for it.

• Your flashlight runs out of power over time, but recharges rapidly when turned off.

• Running grants a small amount of XP.

• Weapons degrade 25% slower and have a 25% chance to not use up a repair point by default, both values can be boosted to 50% via skills.

• Broken weapons deal 40% damage instead of 10% damage.

• All elemental weapon effects have a higher chance of triggering.

• Shields can take much more damage before breaking.

• Spare ammo counts have been altered.
Pistol: 90 -> 200
Rifle: 180 -> 240
Shotgun: 72 -> 60
SMG: 240 -> 360

• Silenced pistols use regular ammo instead of subsonic so you can actually use them.

• Bullets and other projectiles can penetrate enemies more easily.

• Legend skills are rebalanced.

• Flags & statues grant more XP when picked up.

• Loot tables are more diverse, you can find more items in general and most types of firearm ammo from reasonable locations.

• Wandering merchants have many kinds of blueprints for sale randomly.

• Ragdolls will behave more naturally and most importantly will not weirdly automatically aim their heads towards the ground while falling.

• Nightmare no longer bans any items from use.

• Dust particles in the air are reduced by 80%, holster your inhaler.

• Minor other tweaks here and there.




Panic
Includes most of the features from Standard, but also:

• All biters are now runners with rebalanced stats. Yes, all of them.

• Biters don't deal quite as much damage on Hard and Nightmare as they do normally.

• Stamina is moderately increased to compensate for all the running you'll have to do.

• Loot tables have a bigger bias towards spawning guns & ammo.

• Lockpicking is easier to give you a better chance against the unrelenting horde in your few moments of downtime.



Do note that the in-game descriptions of skills remain vanilla as they are strangely difficult to alter, but they all function as intended.


Installation:
1. Go to "\Steam\steamapps\common\Dying Light\DW"
2. Create a backup of the preexisting Data3.pak
3. Plop the mod's Data3.pak in that folder and overwrite
If you want to revert to vanilla, simply use the backup you created earlier.