Just finished Whirlo on the SNES.

I've always adored Xandra no Daibouken on the Super Famicom but never finished it as parts I couldn't get through because of the Japanese language barrier. The game had an English translated Pal release under the title Whirlo but back in the day I wasn't aware of this as I only bought imported games and didn't follow Pal region releases. I just played through this Pal version of the game so I could get through the parts I couldn't before. I must say though the Japanese to English translation is awful, it doesn't hinder the game play, just the story is a bit garbled.
Anyways overall the game is a hidden gem and I feel is highly underrated. It has great platforming utilising various jump techniques, some puzzles, some minor RPGish elements and a few mini side quests. Also you regularly get choices for what appears to be branching paths in the story line.
I say its a hidden gem as the game seems to get mediocre review scores and I don't think it deserves this. I would agree that the game is very hard though and it has a one hit death, but it makes it all the more rewarding when you progress.
http://videogameden.com/sfc/reviews/san.htm