The Steam version is the 5.0 engine (and has a couple of subtle differences in some rooms).
Hints for the upper left roach (as noted in the thread subtitle):
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×You cannot open the door to release that roach and survive.
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×So don't open the door. Find another way to get to the roach.
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×Did you listen to Gunthro near the start of the room? He pointed out the flaws in the orbs.
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×What happens when you hit a cracked orb a second time?
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×So how can you get at that top left roach without going through the door?
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×Destroy the orb at (9,8) by hitting it twice.