I've heard some NightKilla's styled songs, in my opinion this is the most accurate. The beginning sounds very similar to his 2011 songs, and the drops are like a mix of his 2012 and 2013 dubstep drops.
I liked the arpeggios and acid sounds with the slow rhythm, but it's rare that NightKilla used acid synths in his dubstep tracks. The first drop was good, the blippy sounds, hoovers and the 'wubby' sounds are very characteristic of him. The second build-up was really good, the drums and the growls rising are a nice touch. The second drop was freaking awesome! It just sounds so MASSIVE ;-) and it reminds me of "Figures" :D
Very nice tribute!