Qn abt infighter and gunslinger

It is called a Bloodmaster build. Your survivability will be increased but your damage will be slightly lower than normal builds.

I am pretty sure I read your question right o_o.

Really it's just a blood build, the "master" part just applies to Bowmasters. For a DrK, it's a Darkblood. A Marksman is a Bloodmark. etc etc.

I did the same thing on my DrK, sacrificing around 6-7 levels worth of STR for pure HP, and am doing 4str1HP per levelup until I have 20k HP with HB. I am not washing it back, at least not right now. However, it has far more of an effect for a warrior or brawler than it would for a gunslinger.