You see some treasure but to get to it you have to pass a series of dangerous traps!
Monsters(give more treasure)
You see a sparkle out the corner of your eye, its treasure! But wait theres a huge monster standing in your path!
Requires Stuff (gives more treasure)
To continue through you require a specific item. Hopefully you will recieve some treasure for it.
To continue you need a certain amount of knowledge.
To continue your journey you require a certain race.
To continue you require a certain level of prowess.
You continue unaware of what will be round the next corner!
You are required to be a certain religion.