A comprehensive guide on the big monke artifacts: i used a direwolf with 10k health and 700 melee but a far weaker creature will work just fine. For the water cave i used a basilo with 13k health and 500 melee i also brought 10 low level sharks but you wont need as many if you have higher levels. For the pack cave the hardest part is getting there other wise its smooth sailing. Bring a 10 grapples a ranged weapon( for aggroing creatures) some med brews a shot gun some decent armor and a creature(duh). Im just gonna recommend a tutorial on navigating the caves but when you get to the grapple section dont overthink it is really easy. For the devourer just bring a ranged weapon and med brews and a creature. Its on carno island so just keep an eye out for any alphas that might agro other wise just run in the cave swim in the little lake (theres nothing in there) if you have cryos throw your creature out just before you surface and run down the path jump at any jumping parts and grab the artifact. For the water cave just use a tutorial. Its much easier done then said. If this helped you hit the good button to help others out.