Help > Predator Tips, find the page for Lamia to learn more. If it is too difficult, you can also utilize 'Simple Load' which will get Amelia outside and soft reset some things.
1 Vigor and Technique is the most you can gain from one predator. Can see which predators you have obtained this with in Predator Info if it says 100% for these stats. Highest stats can go is the number of predators in-game, so I think 9 currently.
