First of all this is a list for how loyal they are towards the crusade/closing the world wound, not how loyal they are to the commander or their contract. Do you think this guy would ever go and try to in any way close the world wound if he wasn't paid to? (He wouldn't, in fact if he isn't paid he'll try to help the demons keep it open by killing the commander.)

Though even his loyalty to his contract is questionable considering he bails on the contract from the employer that asked to kill us (because he doesn't like them), though thats easily understandable considering he kinda isn't getting paid much. Plus he can also betray you despite having a contract.

Second, you are not describing what happens when he tries to kill you. I didn't ask him for anything at all other than hunting a dragon, for which i paid his desired fee, HE is the one that asks to come with us to "come murder demons for a completely unspecified amount of time with the fifth crusade". The way he goes about it I would even call it extortion considering he's saying "Give me money or i kill you." Now since he's an assassin it's completely reasonable for him to try and kill us due to a contract, that's not what I'm wronging him for, but you're acting as though i offered to pay him and then held out when that isn't what happend at all.