Plugins:

Serum
Ableton stock compressor (I think, honestly just use GClip its free and way better)
Baldis basics soundfont
Distant soundfont for the dimrain boom sound
Sytrus inferno preset for the dimrain guitar (I hate this)
Ableton stock EQ8
DJM filter by xfer for high and low cuts

Drums:

909 kick, snare, clap, and hats + some drum compression idk

Technique:

This song is pretty old and I'd like to think I've improved, but I basically just took some chords and made a massive arp out of them and then did a funny melody on top, I used some old xbox 360 message recording for the middle part and at the end I did like a very fast arp to simulate that thick sound idk.

hopefully this helps :)