I don’t think it was understood that you were sharing the pdf of adventures only. @chamochin please circle back and look at the PDF B shared; it wasn’t ICRPG game rules which I think is what you meant when you said you already had it – it is a ton of adventures.
ICRPG is super simple. A static target number, stats contained on the character sheet, timers to keep forward progression, monsters you can easily make up on the fly, etc.
I’m going to flip this around on you – what adventure have you ran recently that fits what you are describing? Most are large high priced books requiring a lot of prep. Those that aren’t might be quicker to read but still require tweaks and adjustments. All of them have narrative gaps. That tends to be the way of pre-written adventures regardless of the system.
If you can’t say what type of fantasy adventure you want to run, it is impossible to point you toward one you should run. So maybe we start with that and write one for you right here // right now. Are you looking for a dungeon crawl? Are you planning to use pre-made characters? Are you interested in a specific part of Alfheim as your starting place?
For a one-shot you would have a blast playing Viking Death squad:
You could also run Mines of Molok:
Unfortunately I think the robot room was done by another channel and I don’t know that one off the top of my head.
I personally am a Last Flight of the Red Sword fan and point people toward that // run that when people want to try a one-shot but if I was going to go fantasy, I would do Mines of Molok.