All three knowledges he gives can be obtained by exploration, but in case you are as lazy as me, I got him to 700+ amity with just 2 conversations. The only screenshot I took was from a fail requirement.



Interest and favor combo:
1.Bacho Ladericcio
2.Vitheons Belucci
3.Reyas
4.Samier
5.Leona
6.Raibo

Fail combo:
1.Bipache
2.Elgriffin
3.Balker Batian
4.Lehard Motenon
5.Brego Williar
6.Rouibo

Be careful not to mix up Raibo and Rouibo, they are one next to the other and have the same portrait.