Never forget that if you make a bonehead mistake you can just force close the application or power down your PC. Then it won’t have a chance to save the game.

Clean the mobs around (mainly stone golens), eat proper food, if you are using bow go for poison arrows (well I always did well with it), if you really want to prevent spawns benchs are the way, Idk about the campfires.
If you are expecting to die, build a safe portal around (it applies to all).

So I figured I would take on moder before going to bed.
I had eaten lox meat, sausages and queens jam, I downed some frost mead and summoned the boss.
Very first ranged attack I failed to dodge and I was one shot, in afterthought im not sure if I let my health reach full after eating before summoning the dragon.
I then immediately faced the downside of my poor choice of not moving my portal as was earlier suggested to me by Ryzilynt and so I had to go through my portal after downing cloudberries and lox meat and then use most of my stamina to climb out of my portal hole to retrieve my things and keep fighting (are bosses supposed to despawn after killing you?)
Since my portal was so close to the altar the stamina drain from exiting my hole and then trying to dodge moder left me running on empty every time I reached my stone.
Died 2 or 3 times to get it right. When I did get my gear back on without dying that was the final battle.
My observations from the fight were as follows.
When she is in the air she isnt even worth shooting, focusing on conserving stamina to dodge was the only importance.
When on the ground im not sure if it was glitchery due to the nearby terrain being mostly cliffs but moder seemed pretty useless other than her breath attack which I lazily dodged most of the time.
To attempt melee was near pointless due to my sword usually swinging too low (again terrain issues) so I strictly stuck with my bow after establishing it wasnt worth it.
She mostly just stayed still on the ground staring at me so when she was in the air became the only real risk to my life if I didnt dodge properly. Healing mead saved me 5 or 6 times.
My fully upgraded draugr bow needed no repairs despite doing all of the work.
Fire arrows on a draugr bow are pointless since it seemed to negate the passive poison of the bow chipping away with those was taking ages but when I switched to my obsidian and had the damage of those plus the bows passive poison the fight became considerably quicker.
A side note having wooden walls around my portal hole were an amusing distraction for modor to go after instead of me and my portal was undamaged either because she couldnt get her flying attacks into the hole or because there was a silver ore vein above my portal which protected it. And only one wolf interfered with the fight after night hit.
While the fight was technically easy due to her being so passive on the ground it was also high risk if I did get hit so I enjoyed it.
Anyways just felt like sharing. Tomorrow I venture into the plains to die a lot.

Make sure it's morning (don't go at night)
make sure your clear all spawns in area
have meads for frost resist and health
have the best foods you can make.
Have the best 2 bows you can carry (one might break)
have 2-300 fire and/or poison arrows.
she telegraphs her attacks, pay attention. (you do not want to get hit)

Edit : bury your portal farther away from spawn

Originally posted by Ryzilynt:

Make sure it's morning (don't go at night)
make sure your clear all spawns in area
have meads for frost resist and health
have the best foods you can make.
Have the best 2 bows you can carry (one might break)
have 2-300 fire and/or poison arrows.
she telegraphs her attacks, pay attention. (you do not want to get hit)

Edit : bury your portal farther away from spawn

Would a fully upgraded draugr bow get me through or do I still want 2?
And would poison arrows be mostly irrelevent in the case of the draugr bow? (never used them)
Thankyou for all the excellent advice ill definitely have to move my portal seeing as its only roughly 3 and a half lox lengths (is that an acceptable unit of measurement?) away from the altar

Use Needle or Obsidian Arrows not Poison or Fire ones. Poison Arrows DoT effect doesn't stack so you want high pierce damage ones instead.

If you got silver armor and weapons you can also tank during the Bonemass buff whenever she lands. With the buff active she doesn't deal much damage. Keep in mind it will be a long fight. I did it together with a friend and we still went through the entire Bonemass buff.

Originally posted by Shadousin:

Use Needle or Obsidian Arrows not Poison or Fire ones. Poison Arrows DoT effect doesn't stack so you want high pierce damage ones instead.

If you got silver armor and weapons you can also tank during the Bonemass buff whenever she lands. With the buff active she doesn't deal much damage. Keep in mind it will be a long fight. I did it together with a friend and we still went through the entire Bonemass buff.

I have never tried needle but have a stockpile of obsidian. I have upgraded silver armor, a silver sword, banded iron shield, crystal battleaxe and my draugr bow. Thats about it.

Originally posted by Wulfen Hyde:

Originally posted by Shadousin:

Use Needle or Obsidian Arrows not Poison or Fire ones. Poison Arrows DoT effect doesn't stack so you want high pierce damage ones instead.

If you got silver armor and weapons you can also tank during the Bonemass buff whenever she lands. With the buff active she doesn't deal much damage. Keep in mind it will be a long fight. I did it together with a friend and we still went through the entire Bonemass buff.

I have never tried needle but have a stockpile of obsidian. I have upgraded silver armor, a silver sword, banded iron shield, crystal battleaxe and my draugr bow. Thats about it.

Obsidian is fine. Little less damage than Needle but much easier to farm. I think with your gear you are good to go.

Also before you go in to the Plains craft a Frostner. It knock backs Furlings and slows them. Amazing weapon. Only downside is you cant do your 3 hit combo because your third overhand hit will miss because of the knockback.

Originally posted by Shadousin:

Originally posted by Wulfen Hyde:

I have never tried needle but have a stockpile of obsidian. I have upgraded silver armor, a silver sword, banded iron shield, crystal battleaxe and my draugr bow. Thats about it.

Obsidian is fine. Little less damage than Needle but much easier to farm. I think with your gear you are good to go.

Also before you go in to the Plains craft a Frostner. It knock backs Furlings and slows them. Amazing weapon. Only downside is you cant do your 3 hit combo because your third overhand hit will miss because of the knockback.

I dont have frostner in my recipe list. Ive never found the merchant

Originally posted by Wulfen Hyde:

Originally posted by Shadousin:

Obsidian is fine. Little less damage than Needle but much easier to farm. I think with your gear you are good to go.

Also before you go in to the Plains craft a Frostner. It knock backs Furlings and slows them. Amazing weapon. Only downside is you cant do your 3 hit combo because your third overhand hit will miss because of the knockback.

I dont have frostner in my recipe list. Ive never found the merchant

Oh yeah makes sense. I forgot we just had a friend create a private server with a Trader on the main island to buy items for our recipe list. We personally dislike having to search for the Trader with 50k worth of coins in our stash.