Okay... the whole thing about doubting whether Eurydice was really following him since he didn't hear her makes sense... and thinking that maybe Hades had cheated him... makes also sense...



But again, those could have been easily solved with a little thinking:



The thing with Eurydice; simply hold unto hand the whole time. Or asking once in a while: "Eurydice are you still with me? Tap me if you are." Or something like that.



The thing with Hades... there was also a simple way to fix that: Have Hades swear to do it in the name of the river Styx... or something like that. I remember that there was a certain promise that once invoked even the gods couldn't break. If my memory doesn't fail me, they had to swear to the river Styx. I remember Zeus promising in this manner Semele to do whatever she wanted him to do (didn't end well for her...) Calypso also made such a promise to Odysseus; and she really kept her word.