I think I'm right -- in the original level, you can do a complicated reflector set-up that feels much more like the "intentional" solution...
... but not in my version.

One coin that was out in the open is now encased in steel boxes and, more importantly, almost all of the objects in the final room are missing. (That includes the UFO, too, because it made my plan impossible, so be thankful that element of danger is gone, at least. The new solution is dangerous enough as-is.)
No barrel, no reflectors... even the boulder doesn't exist anymore, although the blue button became square to compensate.
Yes, this was inspired by a search for the "intended solution", but my solution is not the intended one. It's much harder.

This level includes a custom house taken directly from WSW to make sure the level looks the same way it did in WSW. Special thanks to Qloof234 for helping me get the house and Jinx133 for placing it in the level properly and replacing one wall with an X tile to make it all look good. I'd do it myself, but I was too busy, so Jinx ended up doing that for me.

PLEASE NOTE: In the original level, a "secret" button in the second room unlocked a gate inside the house. Then you could collect the last two bonus coins and be teleported directly to the exit. However, in the original level, you could exit the "normal" way, you just wouldn't get 100%. In this version, there's no way of doing so. The "secret" exit is now not just a way to collect bonus coins, it's a requirement.