After some reading on the page you linked, I did find the console key, on my Norwegian keyboard it's the |§ key left of the 1 key. I was able to enter console mode ingame and hit resurrect for Faendal, however, nothing happened.
I guess the command is broken for Faendal since I accidentally looted some of his stuff while clicking/trying to communicate with him
And I did continue to play for a while after entering Riverwood (hence having finished Bleak Falls Barrow), so I guess that could be a reason too, since ingame he's been dead for a few hours by now... Had I only known his death would take away my chance of getting the companion achievement, and the entire love triangle questline (I'm a die hard completist
)...
Oh well, guess I have to shrug off 3 hours work and start all over again, rookie mistake I guess.