Not a Grandmaster

linus-lai-

Portalstones

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screwtape

It's a nice optimization puzzle, it's just a little hard to parse (blocks are used where walls would do) and it has some unused space.

Neonesque

Two variations to the 95 solution, but still a very good level, IMO. :)

alazeh

? or !

matt8000xl

New World

I think it gives a good lesson that it is not just about tunneling.

Polaris

A good use of a hidden structure that's difficult to push through. Other parts of the level could be more enticing as options and it would feel very complete.