What can I do to maximise my chances of exiting?

Started recently as an analyst at a top bulge bracket in London in one of their best groups and already hate it here. That being said - I am prepared to die to be one of the absolute best analysts if it means I can exit into something truly impeccable in a couple years time.

What can I do between now and when i'm a senior analyst/approaching associate to maximise my odds of exiting into some good? Couple of questions:

1.) I don't speak a European language. Will this be a deal breaker - is it worth learning a language?

2.) How do you communicate to headhunters that you were a top bucket analyst. Is that something you'll mention on your CV? Does you firm formally designate you as a top bucket analyst come bonus time?

3.) At what point in the analyst stint do you begin to seriously look for firms to exit into. I understand that it's a bit more ad hoc in Europe, but do you only start looking once you're a senior analyst mostly?

4.) What ELSE can I do to stand out in the recruitment process? Right now its all a bit confusing and the experience/skillset you get at Goldman HC vs JPM HC for example seems quite homogenous.

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If someone (with relevant experience, i.e. not just the standard US 'secure your mf offer in month 1/2') could provide a few words on what I can aim towards, please share :)