It might just be me being dumb but I can't find where to go or quite figure out the control. I was trying to follow the blue cubes but the paths seem to be blocked by red hazards. And I don't know how to do the wall-clipping despite the description mentioning it. I would recommend a little more hint of direction in the level design and I would definitely try again with a little more guidance.
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I was thinking about making some sort of tutorial, but ran out of time. Wall clipping is done by using X-ray mode and grappling to a hold point that is behind a wall. Your WASD movement is not able to clip through walls. Be careful while using X-ray though, as hazards turn invisible with the rest of the level, and there is a malevolent bot that will chase you through the last two levels.
To clarify, WASD is relative to your looking direction. If you're looking straight down, then W is down and S is up. Vice versa, if you're looking up, then W is up and S is down.