Dead Island 2 implements a new Skill system involving the use of Collectible Skill Cards, aside from a handful of Innate Skills that are unique to each Slayer, instead of a traditional Skill Tree.
Innate Skills
Amy
Relief Pitcher
Restore stamina by hitting zombies with thrown weapons.
Divide and Conquer
Increase damage dealt to isolated zombies.
Bruno
Backstab
Increase damage dealt to zombies when attacking from the rear.
Rapid Reprisal
Evading incoming attacks by blocking or dodging increases Agility and Heavy Attack charge speed.
Carla
Mosh Pit
Increase damage dealt when in proximity to several zombies.
Dig Deep
Increase Toughness when health dips to critical levels.
Dani
Thunderstruck
Sets off an explosion when Heavy Attacks makes impact.
Bloodlust
Restore health by quickly killing successive zombies.
Jacob
Feral
Increase and stack damage by rapid consecutive hits.
Critical Gains
Restore stamina and increase Critical Damage from Critical Hits when stamina dips low.
Ryan
Retaliation
Evading incoming attacks by blocking or dodging increases Force.
Seesaw
Restore health by knocking down zombies.
Abilities
Defense Skill Slot
Block
A simple parry that will also restore stamina and knockback zombies.
Granted automatically during the course of the “Desperately Seeking Emma” Story Quest in Bel-Air.
Dodge
Evade attacks while also restoring Stamina and knocking aside zombies.
Unlocked upon attaining Level 9.
Jump Kick Skill Slot
Drop Kick
A jump kick that will send zombies flying backward.
Granted automatically during the course of the “Bel-Air Brawl” Story Quest in Bel-Air.
Flying Kick
A more powerful jump kick.
Unlocked upon attaining Level 7.
Special Attack Skill Slot
Dash Strike
Charge forward and slam zombies, to apply the Weakened debuff.
Unlocked upon attaining Level 17.
Ground Pound
Drain every zombie’s stability in the vicinity by slamming the floor.
Unlocked upon attaining Level 13.
War Cry
Increase you and your allies’ Toughness by shouting, and simultaneously applying the Weakened debuff on enemies.
Granted automatically during the course of the “Room Service For Major Booker” Story Quest in Halperin Hotel.
Fury Skill Slot
Blood Rush
Amass Fury by killing zombies or successfully countering.
Currently unknown.
Served Cold
Amass Fury by both parrying attacks and sustaining damage.
Can be earned as a reward by completing the “Coast Guardian” Side Quest in Venice Beach.
Street Brawler
Amass Fury by using melee and weapon throws. Meter will gradually and continuously empty out until maxed out.
Can be earned as a reward by completing the “It Came From Monarch Studios” Side Quest in Monarch Studios.
Surgical Focus
Amass Fury by maiming zombies. Drain Fury by sustaining damage.
Granted automatically during the course of the “The Final Gauntlet” Story Quest on Ocean Avenue.
Fury Special Attack Skill Slot
Overhead Smash
Slam the floor with more power than Ground Pound in Fury mode.
Granted automatically during the course of the “The Final Gauntlet” Story Quest in Venice Beach.
Scream
Apply the Weakened debuff to zombies in the vicinity by screaming in Fury mode.
Currently unknown.
Spitting Cobra
Spew Caustic Damage vomit in Fury mode.
Currently unknown.
Survivor
Blockbuster
Set off an explosion by parrying a zombie, draining every zombie’s stability in the vicinity.
Unlocked upon attaining Level 5.
Bob and Weave
Increase and stack Agility and attack speed, by evading consecutive attacks.
Currently unknown.
Flare-Up
Ground Pound will apply the Ignited debuff to zombies, and lower your health.
Unlocked upon attaining Level 27.
Hot-Footed
Drop Kick will apply the Ignited debuff to zombies, and lower your health.
Can be earned as a reward by completing the “Plumbing The Depths” Story Quest on Ocean Avenue.
Invigorating
Restore health by countering zombies.
Lying in plain sight on a low table at the foot of the bed in the bedroom of Emma’s House in Bel-Air.
Lightning Strike
Dash Strike will apply the Electrified debuff to zombies, and lower your health.
Lying in plain sight on a storage shelf during the course of “The Search For Truth” Story Mission on Ocean Avenue.
Pain Magazine
Cooldown reduction for current Curveball by correctly timing Blocks and Dodges.
Unlocked upon attaining Level 28.
Pain Threshold
Increase damage with Block and Dodge.
Unlocked upon attaining Level 22.
Quake
Increase Force applied during Ground Pound, and can send low-tier zombies flying.
Unlocked upon attaining Level 16.
Rallying Cry
Clear debuffs from both you and allies in the vicinity, and also restore health with War Cry.
Unlocked upon attaining Level 8.
Ravenous
Amass Fury by killing zombies while in Fury mode.
Dropped randomly by Butcher zombie variants.
Safe Space
Set off an explosion by using a Medkit, draining every zombie’s stability in the vicinity.
Unlocked upon attaining Level 4.
Safety First
Restore health by correctly timing Blocks and Dodges.
Currently unknown.
Serial Killer
Increase damage by killing zombies..
Currently unknown.
Shin Shrapnel
Send low-tier zombies airborne and do increased damage with slide attacks.
Currently unknown.
Short Fuse
Fury mode can be used when just over half capacity.
Can be earned as a reward by completing the “Boz Makes A Bang” Side Quest in Monarch Studios.
Steadfast
Increase Toughness and Force by consecutive successful Blocks in a short span of time.
Currently unknown.
Thick-Skinned
Increase Toughness, but decrease Resilience.
Currently unknown.
Vivisuction
Restore health with Dash Strike.
Unlocked upon attaining Level 19.
Warhead
Set off an explosion with Drop Kick, draining every zombie’s stability in the vicinity.
Unlocked upon attaining Level 12.
Wrecking Ball
Apply the Weakened debuff to zombies with Flying Kick.
Can be earned as a reward by completing the “#Clickbait” Side Quest in Bel-Air.
Slayer
Breakdancer
Increase Agility and attack speed by slide attacking a zombie.
Unlocked upon attaining Level 20.
Carnage
Increase damage and Force, but drain Fury faster, in Fury mode.
Lying in plain sight on the computer table in the OSK Shop’s server room during the course of “The Search For Truth” Story Quest on Ocean Avenue.
Caustic Blight
Melee attacks do Caustic Damage to zombies, but drain Fury faster, in Fury mode.
Currently unknown.
Clear Sightlines
Increase damage of ranged weapons, thrown weapons, and Curveballs, by knocking down zombies.
Lying in plain sight on a table near Sound Stage 7 in Monarch Studios.
Corpse Bomb
Set off an explosion by killing zombies in Fury mode.
Dropped randomly by Burster zombie variants.
Cull the Weak
Increase damage to zombies with critical health levels.
Currently unknown.
Deadeye
Stackable cooldown reduction for Curveballs for each successful Curveball hit.
Unlocked upon attaining Level 11.
Far From Done
Increase and stack damage by both parrying attacks and sustaining damage.
Can be earned as a reward by completing “The Chosen One” Story Quest in Bel-Air.
Group Therapy
Restore stamina with consecutive zombie kills in a short span of time.
Currently unknown.
Hack and Dash
Increase attack speed by killing a zombie.
Currently unknown.
Hammer Fist
Send low-tier zombies airborne and increase Force with Dash Strike.
Unlocked upon attaining Level 29.
Heavy Hitter
Increase damage, but reduce health, when employing Heavy Attacks.
Inside the locked Photo Booth at The Pier.
Hunting Season
Increase damage of melee weapons by using thrown or ranged weapons to strike zombies.
Unlocked upon attaining Level 18.
Janus Rage
Increase Toughness based on current capacity of the Fury meter–medium for full, low for partial.
Lying in plain sight on a seat inside one of the trains near the Safe Zone during the course of “The End Of The Line” Story Quest in The Metro.
Juggernaut
Increase damage and Force from Overhead Smash, and amass more Fury.
Dropped randomly by Crusher zombie variants.
No Mercy
Increase damage dealt to debuffed zombies.
Unlocked upon attaining Level 25.
Pay it Forward
Increase damage dealt when debuffed yourself.
Currently unknown.
Pummel
Increase and stack Force by rapid consecutive melee hits.
Unlocked upon attaining Level 23.
Pyro
Apply the Ignited debuff to zombies with both melee and Overhead Smash, but drain Fury faster, in Fury mode.
Lying in plain sight on an office table above The Arcade at The Pier.
Second Wind
Increase damage while sprinting and attacking a zombie.
Currently unknown.
Skull Skewer
Set off an explosion by headshotting zombies with thrown weapons.
Unlocked upon attaining Level 21.
Surgeon
Increase damage by dismembering a zombie.
Unlocked upon attaining Level 24.
The Limb Reaper
Restore health by dismembering a zombie.
Unlocked upon attaining Level 14.
Tools of the Trade
Increase damage of melee weapons by killing a zombie with a ranged weapon, and vice versa.
Unlocked upon attaining Level 30.
Unrelenting
Increase damage to zombies that are knocked down.
Currently unknown.
Volatile
Set off an explosion with melee attacks, but drain Fury faster, in Fury mode.
Dropped randomly by Burster zombie variants.
Voltaic Scream
Apply the Electrified debuff to zombies in the vicinity with Scream.
Dropped randomly by Voltaic Screamer zombie variants.
Numen
Anger Mismanagement
Remain in Fury mode after the Fury meter runs down, but use up your health meter instead, until it too reaches critical levels.
Can be earned as a reward by completing “The Art Of War” Side Quest in The Metro.
Born Survivor
Set off an explosion when near death, and then automatically enter a unique Fury mode where you can restore health by attacking zombies.
Granted automatically during the course of “The Search For Truth” Story Quest on Ocean Avenue.
Corpse Blossom
Set off an explosion of a corresponding elemental damage by killing zombies with either Caustic, Fire, or Shock Damage
Can be earned as a reward by completing “The End Of The Line” Story Quest in The Metro.
Glass Cannon
Increase Critical Damage, based on health level, but decrease Toughness.
Can be earned as a reward by completing “The Art Of War” Side Quest in The Metro.
Seismic Stomp
Set off an explosion by using Skull Stomp on a knocked down zombie, draining every zombie’s stability in the vicinity, and also applying the Bleeding debuff.
Lying in an isolated corner of the platform outside the long train during the course of “The End Of The Line” Story Quest in The Metro.
And that is every Collectible Skill Card that can be dropped, unlocked, or awarded by leveling up, in Dead Island 2 for each of your Slayers.