LttP here
1) how important are upgraded weapons? and I guess the fastest way to get heirlooms is to simply play as much as possible?
They are extremely important. Fully upgrading a weapon is inbetween 1 and 2 more powerstrike.
2) what would be the best 2h sword for me if I want to hit hard and fast, am not very good at feinting and like to play offensively?
Sword of War is a popular choice. Honestly, there are many variations based on how much you emphasize certain stats. You might be surprised and find yourself enjoying... say, the goedendag, more than the weapon previously depicted.
3) given my above playstyle and weapon, what would be the "best" spec for me?
It sounds like you want a middle-of-the-road 18-21 or 21-18 build. Builds such as 12-27 and 27-12 can still be both powerful and fast in the right hands. I recommend using the "skip the fun" feature to test builds at will, since you can respec it at any time you want and with no penalty. Use tinyurl.com/crpgcalc or
http://alpha-lider19.ru/MB/ (second link looks better, but has outdated stats).
4) how important is armor? is it viable to run with low armor to be hit less? is no helmet/boots viable?
It's very important. If you are melee, don't go under 40 armor if you don't mind dying in 1-2 hits. The average armor is around high 50s.
5) whats the math behind the skills? power strike is 7% more damage, athletics is how much move speed? what does one wpf give me?
You get an 8% bonus from power strike, with other bonuses from wpf and how fast you're moving into your swing. This amounts to a raw damage around 60-80. Armor then subtracts from this amount, leaving around 15-30 damage per hit against your average foe. HP is also around 60-80, so expect them to go down in 3-5 hits.
6) what do I do against heavy weapons that cannot be blocked?
A few weapons in the game have the 'crushthrough' tag, where they can deal damage through a block with an overhead. These weapons swing and turn slow, so you need to keep your distance or quickly dodge to the side and attack without hesitation. All other weapons can be blocked.
7) same as 2) but 2h spear instead of sword? Should be viable in 1v1. Am I right that spears are bad 1v1 weapons, since the stab is the only attack that does proper damage and is thus easy to block?
They are good weapons since their swings are easy to hit with and damage accumulates quickly. You are correct that they need to rely on the stab at times to deal the most damage, but those who master both swings and stabs benefit immensely.
8) are range values in cRPG just as skewed as in vanilla? With this I mean that certain weapon animations let for example a 2h sword right swing with 120 reach actually reach out further than a 2h spear stab(also 120 reach)?
Yes, swing and stab reaches can be quite different, with your example being the largest difference. There are those who desire a better polearm stab with better reach. The biggest change in crpg is that stabs deal less damage in the beginning and end than in native. Many of the weaker swings were sped up or altered as well.