Originally posted by hand_sanitizzzzer:

Originally posted by Weaver:

You aren't supposed to get hit often by Moder. You avoid her ranged attacks while in the air, and when she lands you keep range and spam arrow attacks. Moder hits like a truck in any armor so you should ideally avoiding melee range. It's very doable. If you are struggling with the fight, then that's what the upgrades are there for, to make it easier.

Couldn't do that, wolves kept spawning in unusual rates after I summoned her. I mentioned that in another post but people argued that Moder doesn't spawn minions. I spent hours in the Mountains biome (even built a house there) and never got attacked by wolves twice in the same place. Boss battle though, they just kept on coming. There's no convincing me that Moder's boss fight doesn't spawn mobs on purpose.

If you know enough about game design/code you can look at the code. There isn't any mechanic to spawn mobs in direct relation to Moder.
However all the noise you are making, or rather Moder is making, by breaking terrain, rocks, trees, and such can draw in mobs. Any destruction is vey loud and can pull in mobs from a distance.
One thing you can do to help is place no spawn items around your battlefield, such as standing torches, so that they create buffer zone. Some may be destroyed in the fight, but they will help.
Also I prefer to dig a decent sized trench/pit beforehand (wide not deep) and when she lands you circle it firing away, keeping her on the opposite side. This means you can keep your distance without ducking behind objects she destroys that then generate lots of noise.
Hopefully that'll make the fight easier for you.