Shoot out only the lower 2 shot blocks on the side Samus will be climbing. Grab a Beetom and use Morph to pixel align the Beetom with the edge of the wall. While facing right. Xray stand up for height and shoot to freeze. Angle down shot to be safe. Continue refreezing during the next steps. Grab the other Beetom and stand close, but not too close, to the first. Do a small jump, but not too low, and do an angle down shot the frame before Samus lands. This second beetom needs to be exactly 1 pixel below the first. Refreeze the first before testing the positioning. Jump onto your beetom, walk into the wall, and start xray Climbing. Climb up 2.5 screens and then fire upwards to clear shot blocks. Continue climbing and finish by walking away from the crumble blocks.