Level perks

Level perks are perks which work in the same way as their counterparts from the original Fallout games.

A player is given the possibility of gaining one level perk every 3 levels, last is on 24 level and player can delay choose of it till 29 level, Chosen One Class perk have extra 2 level Perks

Note: Level perks work off your permanent S.P.E.C.I.A.L so if want to take Adrenaline Rush, you will need real 6 Charisma (base + perks + implants) it doesn't effect temporary special like from Drugs or Armor Perks.
If perk require other stat than special like Melee Damage you can boost your stats by drugs or other temporary source.
It is worth mentioning however that SPECIAL Boy Perk Synergy allows you to use temporary S.P.E.C.I.A.L sources as if those were permanent, thus giving you more freedom in your character's build creation.

A full list of level perks:

Name	Req. level	Other requirements	Bonus
Action Boy	12	AGILITY ≥ 6	+2 to Action Points +50 AP Regen
Adrenaline Rush	3	CHARISMA ≥ 6	HP loss effects DT's and DR's incremental increase at certain thresholds Gives 8% Slow Resistance per CH
Atomic Savant	9	ENDURANCE ≥ 6	Reduces damage from temporal effects based on the percentage of Damage Resistance. Bleed effects are mitigated by Normal DR, Poison by Plasma DR, and Burn by Fire DR. +8% Plasma Damage Resistance.
Better Criticals	12	LUCK ≥ 8	Increase Critical Power by 25% Increase Critical Damage by 50% for aimed attacks
Better HtH Criticals	15	STRENGTH ≥ 8	+33% Critical Power for using melee weapons +75% Critical Damage for using melee weapons Penetrates 20% critical chance resistance
Bonus Battle Stats	6	PERCEPTION ≥ 6	+15% Damage, +3 Weapon range(not melee), +50 Accuracy
Bonus HtH Attacks	18	AGILITY ≥ 8	-1 AP to HtH attack cost +8 Turnbased Attacks
Bonus HtH Damage	3	STRENGTH ≥ 5	+10 to melee damage Shortens battle timer by 30%
Bonus Move	3	AGILITY ≥ 6	+2 APs that can only be expended for movement in TB combat +10% Movement Speed
Bonus Ranged Damage	9	PERCEPTION ≥ 6	+3 to a weapon's damage range when using small or big guns Lowers the target DT by 1
Bonus Rate of Fire	18	AGILITY ≥ 8	-1 AP to ranged attack cost, except if throwing melee-class items
Coolheaded	3	CHARISMA ≥ 6	+8% resistance to Shock critical effects for each point of Charisma. Shortens the duration of debuffs like Shock, Slow, Taunt, Mark, and Bewilderment by 30%. +4% Laser Damage Resistance.
Cowboy	6	AGILITY ≥ 8	+50 AP Regen while using one handed weapons (all weapons) Reduces Pistol attack speed time by 40% +10% more range for pistols
Death Sense	6	LUCK ≥ 6	Penetrates 20% of the targets total DR Penetrates 30% of the targets total DT Affect targets with less than 50% max HP
Demolition Boy	9	STRENGTH ≥ 6	10% more damage from area effects and 1 more radius in area effects.
Dodger	3	AGILITY ≥ 8	+150 to AC +25 to AC Cap Damage done from distance longer than 40 hexes do only 50% damage
Earlier Sequence	3	PERCEPTION ≥ 5	+30 to Sequence
Even More Criticals	6	LUCK ≥ 8	+10% to critical hit chance +1 critical chance from every source
Fast Attacks	9	AGILITY ≥ 6	-200 Attack Speed
Faster Healing	3	ENDURANCE ≥ 6	+15 to healing rate -5 Healing Time +25% heal from meds
Firefighter	3	INTELLIGENCE ≥ 6	15 Fire and Explode DT -35% melee damage for opponent Immune for Pyromaniac Bonuses 8% confusion res per INT
Gain Agility	3	AGILITY ≤ 19	+2 to Agility +5 to special class calculation (Killer, Raider)
Gain Charisma	3	CHARISMA ≤ 19	+2 to Charisma +5 to special class calculation (Clone, Chosen One, Leader, Cyborg, Regulator)
Gain Endurance	3	ENDURANCE ≤ 19	+2 to Endurance +5 to special class calculation (Super Mutant, Priest, Infantry, Soldier)
Gain Intelligence	3	INTELLIGENCE ≤ 19	+2 to Intelligence +5 to special class calculation (Alien, Paramedic)
Gain Luck	3	LUCK ≤ 19	+2 to Luck +5 to special class calculation (Random Boy, Scout )
Gain Perception	3	PERCEPTION ≤ 19	+2 to Perception +5 to special class calculation (Sniper, Assassin)
Gain Strength	3	STRENGTH ≤ 19	+2 to Strength +5 to special class calculation (Combat Master, Deathclaw, Wrecker)
Ghost	6	PERCEPTION ≥ 6	+100 bonus to Sneak when within 5 hexes from a wall
Gunner	3	INTELLIGENCE ≥ 6	Convert 10% of damage to Lethal Damage, doubled on critical hit
Healer	3	ENDURANCE ≥ 6	+50-100 to hit points healed using First Aid
Heave Ho!	6	STRENGTH ≥ 6	+6 to Throwing Range +30% DR penetration for throwing
Hit and Run	6	AGILITY ≥ 6	Doubles MS when attack or use first aid/doctor on target for 3 sec when use Melee or throwing. Halves the duration of Slow on you.
Hit the Gaps	12	CHARISMA ≥ 8	-80% to your target's armor's critical modifiers
In Your Face!	9	AGILITY ≥ 6	Attackers' chance to hit you drops by 50% if s/he is standing on a hex next to yours Lowers opponent's bounty power by 1
Iron Limbs	3	AGILITY ≥ 6	Immune for Criple limb immune for weapon drop 8% criple res per AG Also known as Iron Grip
Lethal Protection	12	PERCEPTION ≥ 6	Reduce % Lethal Damage as damage resistance 8% death effect res per PE
Lifegiver	12	ENDURANCE ≥ 5	+6 Endurance for HP calculation
Livewire	3	AGILITY ≥ 6	Doubled AC
Living Anatomy	12	INTELLIGENCE ≥ 6	+20 to Lethal Damage when attacking living organisms +200 to Critical fail roll while using First Aid Skill
Man of Steel	15	ENDURANCE ≥ 8	+25% Critical Chance Resistance +50% Critical Power Resistance 8% bypass effect res per EN
Medic	15	INTELLIGENCE ≥ 8	Healing cooldowns reduced by 75% +15-30 Hit Points in First Aid Heal
More Critical	3	LUCK ≥ 6	+6% to critical hit chance +1% from aimed bonus critical chance (Need clarification as to what this means)
More Ranged Damage	15	PERCEPTION ≥ 8	+5 to a weapon's damage range when using small or big guns
Muscular Physique	18	ENDURANCE ≥ 8	Reduces enemy Damage Multiplier by 20%. +5% Damage Protection during battle. +6% Electro Damage Resistance.
Pyromaniac	9	ENDURANCE ≥ 6	+75% to damage when using Fire weaponry
Quick Pockets	3	AGILITY ≥ 5	Half Reload cost -1 AP Cost for using super stimpak or bloodpack
Quick Recovery	3	LUCK ≥ 6	Recovering from knock downs/knock outs costs significantly fewer APs than it normally would 8% AP Drain Res per LK
Right between the Eyes	15	PERCEPTION ≥ 8	-90% to your target's helmet's critical modifiers
Sharpshooter	9	PERCEPTION ≥ 8	+2 to Perception when determining how far you can see, Double your Accuracy 1-10% DR Penetration
Silent Running	6	AGILITY ≥ 6	Attacking a critter from behind always causes a critical hit when unarmed, using melee weapons or firing one-handed guns. No penalty for running while in sneak mode.
Spray and Pray	6	LUCK ≥ 6	Remove Critical Chance aimed cap
Stonewall	9	STRENGTH ≥ 6	8% per ST chance of avoiding knock-downs Immune to knockback
Surgeon	3	INTELLIGENCE ≥ 6	+50 negative HP cap Recover +2 APs after use doctor or first aids
Toughness	6	ENDURANCE ≥ 4	+4 to DT, +12 to DR
Vampire	9	ENDURANCE ≥ 8	+25% lifesteal for melee attacks If the target is poisoned, lifesteal doesn't work, so keep in mind that any weapon with Poisoned perk (like Brass Knuckles will not work either!
Weapon Handling	3	CHARISMA ≥ 6	+2 to Strength when calculating chance to hit +25% more Lethal Damage