This addon removes the pop-up window that appears when an achievement is gained. It also provides the option to disable announcing your own achievements in chat.
The achievement is still announced in the message log, and the game can still hassle you for donations when achievements are gained.

Compatibility

This addon superloads and OVERWRITES the following functions:
engine/interface/WorldAchievements.lua: showAchievement()
engine/interface/WorldAchievements.lua: gainPersonalAchievement()

This addon superloads the following functions non-intrusively:
engine/interface/WorldAchievements.lua: gainAchievement()

This addon uses the GameOptions:generateList hook to provide a new option.

Weight: 39438

Changelog

1.0.4:
- Fixed announcing already-achieved achievements

1.0.3:
- Fixed lag (oops)

1.0.2:
- Another attempt to disable achievement chat announcements (impossible to test without uploading the addon)

1.0.1:
- Added option to disable achievement chat announcements

1.0.0:
- Initial release

Creates a set of adventure mode achievements for Nightmare and Insane difficulties.
Creates a set of roguelike achievements for Normal difficulty.