I know the "Get better gear" and I'm trying, majority of my gear is ancient.

I got up to the boss, but needed probably another minute? or maybe 2 to kill him.

My issue is I die so fast, like it's crazy. I don't know what I'm missing.

Tag is Kazhang#1784 if you want to take a look and maybe offer advice?

One key is the iron skin skill. It gives you 50% damage reduction for 4 seconds. This is the main time you have to tank, then you need to back out and get the skill off cooldown before going back in. What gets a lot of people is the rune you use lets you walk through enemies when you get hit, and this produces another iron skin icon on the "buff bar". This doesn't mean your 50% damage reduction is still going, just that you can walk through enemies.

Here's my build from season 4 when it was the top 'sader build: http://us.battle.net/d3/en/profile/Crazy9000-1143/hero/69395799. It was good enough for a top10 clear at the time, GR70. The grifts have gotten easier since then, and there's hammer jammers now, so 75 should be very achievable without top gear.

Looking at your profile, you are missing cooldown. This is critical for survivability, so probably what is causing you the most trouble.

practice on ur toon good luck bro

OK so maybe do some re rolling for cool down. Thanks. I do have some extra rolls! Also I use iron skin with the stun chance to proc hammer jammers. Better off using flash rune?

I haven't played the build with hammer jammers, but if you proc the hammer jammer enough I would switch. Being able to walk through mobs lets you escape easier, and also lets you gather large packs and jump in the middle when your iron skin is up, damaging in a full 360 radius.

If the jammers ability is down from swapping runes, probably not worth it. Either way just getting some cooldown and being aware of the iron skin will get you the 75 for sure.

Perfect! Thank you. I'll do some re rolling later!

Finally did it! yay rank 248 crusader. So stressful... Final done all the hard ones, now just grinding for gem levels to augment and I'll have my firey border!