Few things you could try:
- The off beat synth stab that starts at 0:15 could be automated to increase the cut off of the filter. Apply some distortion or overdrive if not satisfied. And increase the reverb gradually till the drop.
- The bass that is introduced at 1:00 should also have the cutoff technique applied as in #1. This makes is dirtier and loses the bottom end at the drop.
- The melody line you introduce at 1:00; there you could try to hold the last note just 2 bars before the end. And then increase the pitch of that note, so the sound runs up.
Just before the drop a silence with only the tails of the reverbs on the items might work as well.