Getting sick of the final boss...

[AlexOvTheAbyss]

Dreamer - no problem.
Nightmare area and killing root until about 15 - no problem.
Nightmare himself - I feel like he got nurfed in the wrong way.

My problem is that if he hits me, I get one shot (well, stunned by the first, then the rest of those annoying ass homing projectiles finish me off). All my armor is upgrade to 19 (I've been using mostly the Twisted set, and switching out the head piece sometimes to stay in medium weight). I seem to only be able to dodge his attack by sprinting left/right, but that only works if I'm far enough away, and sometimes I spawn at the beginning or return right next to him and one shot.

Is there some trick to dodging this attack, or at least surviving it? Even if it takes me from full to 1hp, I could at least have some chance.

[Aria Athena]

You can avoid the meatballs by running sideways or towards them. If you are far away you can avoid it by just walking.

[An Automaton]

nightmare is just a joke if you know what to do... get 15+ buff, get out, avoid the ball spam and then use beamrifle + the rad mod... spam the mod = win

[The Gr8>]

++1

[Revolucas]

You can just walk under him to avoid the meteor strike. But make sure you run through and past him quite a ways so you can repeat the process.

[Tiny Timmy Tokyo]

Think of the last boss like a mega man fight, which means there's a pattern to it. Unlike the other bosses in the game that have multiple approaches, this one strictly has only one.

For the second phase of the fight:
1. When you go in, stay as far away as possible, this makes the projectiles travel further before they detonate on you. So you can easily and calmly roll out of the way (or run). I would just save your ammo since you'll be doing no damage to it without the void buffs.

2. When you get teleported to the void drink a red potion to keep your HP up and try to kill at least 7 or more enemies, then walk through the portal.

3. Once you're out of the void make sure you're not too close to the boss, this is crucial. Then start pelting him with as much damage as you can.

Rinse and repeat really, that's all.