Barbarian Basic Skills in Diablo 4 are assigned to the Left Mouse button usually and are used to generate Fury, the Barbarian resource used to activate Fury Skills. There are 4 Barbarians Basic Skills and these are: Bash, Flay, Frenzy and Lunging Strike. Which of these Basic Skills you can use is determined by the type of Weapon that you use. Below you can see what each of these Barbarian Basic Skills do and how much Fury they generate.
Barbarian Basic Skills
Bash
Berserker
Generate Fury: 9
Bash the enemy with your weapon, dealing X damage. Has a 20% chance to stun for 0.5 seconds.
Requires bludgeoning weapon.
Deals Physical Damage
Flay
Warlord
Generate Fury: 9
Flay the enemy, dealing X damage and inflicting Y bleeding over 6 seconds.
Requires a slashing weapon.
Deals Physical Damage
Frenzy
Berserker
Generate Fury: 5
Unleash a rapid flurry of blows, dealing X damage with each pair of hits. Your attack speed is increased by 20% for 3 seconds, up to 60%.
Requires dual wielding weapons.
Deals Physical Damage
Lunging Strike
N/A
Generate Fury: 9
Lunge forward and strike an enemy for X damage.
Deals Physical Damage