Strong

"Strong" is an achievement and trophy available for Dying Light.

Tactics[]

Keep in mind that killing an enemy grants the same amount of Power skill points as hitting them till death so methods of insta-kill is useful for speeding up the process for farming said points
Vault Stun + Stun Kill + Drop Attack allows one to kill 2 Infected at once while maintaining mobility
Stomp + Area of Effect attack that knocks down multiple enemies such as Ground Pound, Stun bolt, Windmill, etc can grant multiple kills with a single attack though this is dependent on the player's reactions
Explosives, especially Trap Bombs can kill multiple enemies without much thought though they can attract Virals
Demolishers and Goons can be instantly killed with a headshot and grant a large amounts of points at once
However the most efficient method is Camouflage Attack + Takedown as it allows one to slaughter large hordes with ease with the only requirement being time management
Kill Frenzy grants a boost and makes many of these farming tactics much more efficient
Keep in mind that killing enemies with the Buggy gives Driver skill points