You have a reputation level with each aspect that exists. Failing missions lowers it, and completing them increases it.

The levels are:

• Hated
• Hostile
• Unfriendly
• Neutral
• Friendly
• Honored
• Exalted
• Paragon

Increasing your reputation level comes with benefits, such as:

• Increased chance of higher rarity missions
• Increased chance of missions from that deity
• Special missions

TODO, Currently you can't check your reputation levels, but you will be notified when they change in a chat message.