I pretty much stopped playing in the 80's but the proper Arc Lash build is just as easy and I pretty much can kill anything without effort. I tried the build Mizake was talking about at lower levels and it was ok but ended up being ass since you have to worry about cooldowns. With the proper arc lash build you never even give a single rats ass shit about mana, you just buttfuck plow all monsters without any effort required at all.
As for it being squishy, yes you can be there are random fag mobs that 1 shot you in the NM 50+ range it's pretty much just this little American Inventor faggot here. Deadliest mob in the game everything else is piss easy.