It looks quite intense. Is it intimidating for the away players / supporters?
None of us are, mate.
Depends on how "wild" you create it, how many you are, the will to support/sing trough out the game, flags, pyro, and so on and on. In general in Denmark its not really that much of a scare as the supporters arent that many compared with foreign clubs, but we can create atmosphere, no doubt. My home club got promoted yesterday (sunday) back to the "Superliga" best danish league, it was rocking on the stadium and in the "kurve" the whole game.
But when there is a something like a derby or those you "hate" come to town there can be an intense atmosphere around stadium, it all depends on which kind of fan(s) youre with though.
But try go to a game in Germany and watch one of the bigger clubs play, you will find it amazing. Its something you cant witness in England the same way.
Here some atmosphere from my clubs supporters, you dont have to be that many always to create a party you know - and offcourse it cant be compared with the likes of german clubs and so in Europe, but you get an idea.