Itsy bitsy spider came up the water spout...
OUT CAME THE GUN AND WIPE THE SPIDER OUT

They say you need megas. I got three very high level rexes and a grave with her name on it.

Megatherium are prob your best bet and a yuty. Megas have a ability to double attack and speed when killing bugs. Pretty useful

Rexes, Rexes, more Rexes, bring rocket launchers, bring friends with rocket launchers.......and Rexes.

Bring 19 Megatherium and 1 Yutyrannus. Can and will kill Lysrix on any difficulty.
Replace 1 Mega with a Daeodon for more survivability.

This girl happens to randomly spawn when you exit the cave in the redwoods (spider ravine) on valgeuro, so proceed with caution. Also killed my Deinony I'm sad

When i first fought lystrix, i was over paranoid about how strong she'd be, so i bred and tamed 5 spinos, and 5 rexes. It was an absolute pain to get them to an obelisk, but when it came to the battle, it only lasted around 5-7 seconds. Might have been my settings, might have been my choice of dinos.

Do u think a Max gig with Health and damage mutations could kill it by it self

Use 2 max lev reapers with 100% imprint

Basic Stats
Attribute Amount at Level 1 Increase per point
Wild
Health 324000 +64800
Stamina 150 +15
Oxygen N/A5 N/A
Food 1500 +150
Weight 4000 +80
Melee Damage 1802 +9
Movement Speed 100% N/A3
Torpidity 100000 +6000

Great friend to all and such a lovely person, if you see it go say hi!

Don't bring flying pets to the battle because I did and luckly my shot gun had lots of ammo so I managed to kill the gamma brood mother
It does not let flying pets in the arena .

I’m going to fight it but I want a giga

Flamethrower will wipe the spiders out remember ammo

Always do level 3 beacuse doing all 3 is a wast of resources and if you beat level 3 you get the rewards for level 1 and 2 also.

Bring lots of megatheriums, they have a damage boost against bugs, wait, spiders are bugs right? RIGHT?!?! Oh and two mate boosted yutyranuses. And rex's.

Bring nineteen rexes and one Yutyrannus to encourage the rexes

I went in with two Daeodons eight megatheriums a yutyrannus and one megalania to kill the alpha version. I climbed to the ceiling of the cave with the megalania and blasted it with rockets from the roof while the megatherium tanked it and the yuty gave the Megas a buff and the daeodon healed

Bring 1 snow owl 1 yuteranous and lots of rexy boys. Rexy boys tank it while yuteranous encourages and snow owl heals all rexy boys

Needs to be added on Ragnarok please Dododex