Oxgaz has launched Ruthless, a soundset for the Massive synthesizer instrument from Native Instruments.
You will find 55 ready to use sounds, which will give your tracks that ear piercing, metallic, Deathstep sound.
Each patch has all 8 of Massive macros assigned to various parameters, which allows the user to morph and transform each individual sounds into a completely new sound.
These sounds were inspired by the underground artist Mantis.
The soundset is available from ADSR Sounds for $29 USD.