Keep expectations open before you spin
Before you start a session, accept that the bonus round can arrive at any point, and nobody can say when. How often it comes is not known in advance. The result of one session is random whatever the RTP, so a short visit can end above or below the amount you put in.
Open the game rules before you play, because the RTP version Gday Casino runs is shown only there. Three versions exist for this game, and only the rules name the one in use. Match that name to the version table on this page before you set your stake.
Treat the maximum win as a ceiling, not a target. The maximum win of Gates of Hades is reached very rarely. Set each stake for the play you enjoy, and do not count on the ceiling being reached.