Was there ever a remake to this game or any sequel (Avish 2)!
Anyway, I'm replaying this game after many years.
On Level 09 - OCXAFU: It's not so hard...
There are two keys here, one on the left (top) is easy to get, but could it be possible to get the one on the right (top)
One thing I tried was placing the fan on the lower ledge and then "jumping-up-right" from the upper ledge...I figured that fan might blow me away to the slightly elevated trampoline-tile below and I might just make it up there....but unfortunately, the fan didn't affect me as I was falling down and I landed on the less elevated trampoline-tile, bounced a few times (one tile height short) and game-over
I forgot that the fan only affects you if you're falling down with an umbrella and there certainly seems to be no umbrella on the level.
And even if you get to the right-top-key...how to make it to the door....one idea I had was to use the three bombs and drop them down one by one and blow up the three concrete-tiles below in the way and then make my way down with the elevator. Dunno if this will work...never made it up there to try this.
Level 9 whole room screenshot (spoiler!)
http://imgbox.com/iwuMnQjB