Of the ten songs that make up the album, tracks like Hit the Lights, which opens the album with immediate power, and Motorbreath, a direct and energetic cut, stand out. Jump in the Fire and Whiplash were released as singles, showcasing the variety within the album's raw proposal. The recording took place in a very tight timeframe, and the result was a collection of songs that defined a sound for thrash metal. Despite not immediately charting, its impact was felt over time, especially after reissues and the band's subsequent success.
The initial reception was positive, and over the years, *Kill ’Em All* has been recognized for its contribution to the genre. The combination of precise riffs and fast tempos, along with a defiant attitude, resonated with a new wave of musicians. The album, released through Megaforce Records, sold 60,000 copies worldwide by the end of 1984, and in 2025 received a 4x Platinum certification in the United States for shipping four million copies.