I have a lvl 27 warrior, a bit overleveled for normal but I can't get to diablo :\

Those winged things that shoot the red balls take my life down fast, if theres lots of them. And its hard to kill them. I have a massive sword of haste, but its 2-handed so if I use it I loose health alot faster. Also I just take a lot of damage, period. Any suggestions?

I have max dex and i'm maxing vit now. I have some in str. for gear but no more atm because ~10 pts = 1 dmg for my level. When I finish vit I will max str.