I’d suggest rewriting/redesigning your game.
You shouldn’t be giving an unsatisfactory ending. You shouldn’t be providing unsatisfying choices.
There shouldn’t be right or wrong choices. You should try to ensure that each path is as fun as the others.
Have a read of COG Game Design Guidelines particularly the section on choices and on Victory Design and Endings.
Every ending should be awesome, even if it’s a failure or a tragedy. There should be something dramatic and satisfying about every ending.
Examples:
In Choice of the Dragon, the PC can get killed early…by getting struck down as divine retribution for setting themselves up as a false deity.
In Psy High, the PC can get arrested, but have the awesomeness of knowing that they’ve destroyed the magical mind-control device.
In Choice of Zombies, the PC can succumb to the zombie hordes, but have the awesomeness of knowing that they were able to not only save their foster child, but also get word out about how to fight the zombies.
In Hollywood Visionary, the PC’s movie can flop at the box office, but get the awesomeness of having it turn into a cult classic