I think the idea you start off with is very good. It's got this nice, almost slightly sad undertone to it and I like the idea of using that really machine-like harsh sounding synth to evoke the mech aspect. I really enjoyed the sudden addition of the piano at the end, and wish that part had come earlier so I could have gotten more into it.
What I miss from this track is the dynamic range. Everything sounds uniform in terms of loudness and very two-dimensional. I think the repetitive composition itself could be fine on its own if there was more depth to the production so that I would feel more immersed in this environment. If the sound and the way it's produced is interesting, it'll be worth repeating those same ideas throughout, regardless of whether there is a "melody" or not.
The track doesn't seem that aggressive for the art it was inspired by and the description, but I think the overall continuum is quite fun and I'm glad you had fun making the music that you want to make. That's the most important part of all.
As a side note: I love the subtle introduction of the lower ends at 1:35. I think if you made more of those subtle changes throughout, it can change the soundscape in very interesting ways.