What I've learned from battling these to find an R-Reaper:
1. As you've probably read, they project a spotlight passively, if you find yourself within this cone of light, prepare for a fight.
2. THEY HAVE A SHIELD. Save your ammo/element, their shield only comes down for approximately 1-3 shots of a tek rifle, or one shot of a shotgun. If working with another player time your shots & shoot together.
3. It's either summons or spikes! They will shoot a round of spikes at you OR they will shoot a slow moving purple ball down towards the ground, causing dinos to spawn. Unless the spawns are fliers just ignore them, stay in the air, and continue the fight.
IMPORTANT NOTE: The shield will stay up until it finishes the attack or finishes spawning in dinos, stay on the move until then!
These things are like watch guards. They have a light that shines from them that when you go in it they summon R variant creatures that are super hard to kill. It also has “babies” that appear after acquiring mutagen or spawning naturally, these swarms are a MUCH worse version of the insect swarm. Good luck to anyone encountering this!
Whenever you encounter one of these things, or plan on encountering, or just found it, you should most likely bring some flak armor and a pump action shotgun, also make sure to bring a few extra pairs of armor, because when this thing attacks it is completely invulnerable. Hope this helped!
Figured out a really good way to avoid these things in the cave is to use a shadowmane since you can go invisible to un agro them. Works really well as Rockwell’s innards are pretty difficult with these things everywhere
Me and a tribemate list a couple dinos to this thing and only got out with 1 of our shadowmanes after bringing 2 and some rexes. Its inbulterability seems to be after each wave of dinos and gets harder after each.
We are gonna try to have one of us kill the dinos and tank damage and the other be in an imprinted velo and shoot it quickly. Id imagine any ranged dino, or strong weapon is effective so on this map a velo is a must aswell as a flier possibly to melee it. My shadowmane coult teleport to it but only ever did 200 damage max while my shotty did 88 per pellet
If you encounter one, be ready. It will shoot a projectile that spawns in Corrupted versions of different creatures like Rock Golems, Quetzals, Shadowmanes and even more from small to gigantic. But dont underestimate the corrupted creatures even if its a Raptor or a Saber, because these creatures are so much stronger, have way more health and everything with them and the Summoner is terror! So run!
The summoner only summons few air creatures, and they all can be neeted, so, you can bring a harpoon launcher with net projectiels, a pump shotgun and a shield, ween the summoner summons air creatures net them, and ween it's shield run out shot it with the shotgun, they give a good amount of xp but it's better just to avoid them (sorry for bad english).