Galinho: By posting your guide, it's implied you want critique/comments on your guide. However, by calling out posters, you're lessening your chance of getting some useful suggestions. While ilkori didn't word it in the nicest way, he has a point in that a guide poster ought to know how his/her build will fare in almost all parts of the game, in all difficulties, so guide readers will have a good idea of what to expect and how to tackle areas that may pose a challenge to the build. Without this, guide readers will be left blind when they reach Hell. I'll let the namecalling pass this time round, but next time you flame other users, I won't be so lenient.
Onto the guide itself:
1) IMO, the intro needs to be shortened a bit. While it's interesting to find out about how you formulated the build, it doesn't need to be that long.
2) Statistics: I notice you rely on Defense/Attack Rating gained from DEX investment quite a bit. However, given the Assassin has few Defense-increasing skills(CoS being the only one), so I'm not sure a heavy DEX investment is a wise idea, particularly in late NM/Hell when monsters receive a lot of AR, not counting some monsters who have Ignore Target Defense. Furthermore, as you yourself said later on,
... ATR is a different story, because it's really easy to find on items, especially rings
Armor
Again- if u have a chance to complete Nat, I recommend a socketed or even a non-socketed Nat armor.....
it's relatively easy to get AR on equipment, while +VIT/HP harder, so why not invest in VIT instead?
You also mentioned STR has a strong part of your guide for reasons of damage. However, STR only increases claw damage by 0.75% per point. Looking at the big picture, do you believe that it's more worthwhile to get 75% ED(100 STR) or 300 life(100 VIT), especially considering you're only using claw damage half the time?
3) As other posters have mentioned, you need to improve your writing style. Guides have to be concise and to the point, and need to be in grammatically correct English. Anything less makes reading the guide significantly more difficult.
4) I'm not sure about your decision to max BoS....the diminishing returns really start to make themselves apparent after slvl 10. Also, using Natalya's Odium with a Bartuc means you'll probably already be at the speed cap for Trap-laying and Normal Attack at slvl 5-8 BoS, so any further points in BoS will probably only benefit you by giving Faster Run/Walk. While I understand your emphasis on speed, why not consider putting the excess BoS points into a direct damage skill like Lightning Sentry/Charged Bolt Sentry to synergize your Death Sentry?
5) There seems to be a conflict between stat points and skill points. Why do I say this? You place a high emphasis on STR in your stats for the purposes of increasing claw damage, yet you have no points in Martial Arts. While claw damage boosted by Claw Mastery/STR may last you into NM for some time, isn't a better idea to place skill points in Martial Arts that will definitely improve melee damage(such as elemental chargeups like PS/CoT, or Kicks like DTalon/DTail, which would make excellent use of your STR/DEX investment) rather than rely solely on the reader's ability to get high damage claws, which may be too expensive?