Holiday to Europe in October?

Hey guys,

I would very much like to go on a boys holidays to somewhere in Europe in the last week of October or first week of November and I am looking for some recommendations.

We would like to be somewhere with good weather and where there are going to be plenty of crowds, some adventure to be had, drinking, fun and maybe even some sights to see.

There are a few things we would like to check of our list of things to do; so perhaps if someone can suggest some places where we can do some of this would be great:
Sky diving
Bungee jumping
Bike trails for some nature/forest fun
hidden sights? something off the beaten track
Rock climbing
Some local festivals, shows, etc..
Firearms; would very much like to fire some guns to see what all the fuss is about..

and of course some friendly hangouts, always love meeting new people who are up for some fun, sun and drinking.