What should my attitude/mindset be? Are women more attracted to an asshole or nice guy?
The same goes with passive/aggressive, is it better to be passive or aggressive? Assertiveness is passive/aggressiveness to some extent

Are all girls attracted to the same kind of guy?

If I like a girl and not sure how she likes/feels about me, should I hang back a bit and flirt or tell her full-out I want to fuck her?

Hey man, maybe I can answer some of your questions...

All girls are different. BUT!!!!... The majority of girls like guys with similar characteristics

These characteristics include:
Funny, cocky in a good way (David DeAngelo), confident, charming, manly, different.

The most important, however, out of all of these is the confidence!

As far as assertiveness goes, I personally believe that it is better to be aggressive than passive. I actively call people out on their shit all the time because it makes me feel like I am valuing myself instead of allowing myself to be treated poorly.

Women will test you sometimes by giving you "shit tests" (tests to see how much of a man you really are). If you handle these passively, she is going to see you as a pussy. Be the strong man, and lead the interaction.

And regarding your interaction with this girl...read the situation. If she is showing signs of interest (e.g. smiling a lot, direct constant eye contact, lots of touching) then she is most likely into you. If she isn't, I would hang back and continue to flirt with her. Make sure you ATTRACT her, and then build strong rapport with her. Attract her by being funny and charming.

I go into a LOT more detail about inner game/confidence in my FREE EBOOK. Check it out.

Peace!

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If you're afraid, don't do it. If you're doing it, don't be afraid!

-Genghis Khan

Want a FREE ebook teaching you how to attract Hot Girls Today? Check out my website NinjaSeduction.com for your free ebook.

I think you should be yourself in the best possible way you can be, if not, the girl will find out that your'e faking.

I've learned that the best way of being successful with girls is to just be yourself and fast as u can create a funny/interesting conversation or what u in the states call it "bond" with the girl.

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Be yourself, don't act.

Confidence, a willingness to walk due to an abundance mentality, a sense of entitlement. All are important.
An example of this: This wasn't necessarily a shit-test but I'm thinking of a time in a daygame setting where after I took the # and had to run, the girl wanted me to stay around and keep talking. Many times what works is to do the opposite of what a "nice guy" would do, but not in an asshole manner, rather in a confident manner. I just said "would love to but i have to get over to my buddy's place." I could sort of tell from the look in her eye that she wasn't used to a guy saying 'no' to her, confirming that this was the right play in that situation.