Firstly, nice track. It's really reminiscent of some of the Bulb demos and I like the glitch effects towards the end.

The kick drum sounds like it is heavily compressed and is ducking the bass/causing the pumping effect. It may be worth looking at the kick drums compression and using side chain compression to focus on the low end? The snare also seems to have a similar effect.

Also if you used a brick wall limiter on the track it could have had an impact on the effect the kick drum has.

The guitars sound great. If you can resolve the kick and snare it will help your overall mix and it should allow the bass to come through abit more as it won't be ducked by the kick.