Pretty good for a first edit. What you can improve on is add motion blur and time remap the clips so that kills happen exactly on the beat like the bullets hit exactly when the beat drops. You can use an effect called twixtor for that or even basic time remapping would do
Add more ingame noise. the few noises that do come out feel too out of place. Honestly even keeping the spectre pick up noise would help. just make it a little noisier. or alternatively you can tweak the noises and stuff to make it fit better to the music.
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