Achievements support both dropping Mythic drop tables and running skills when an achievement is completed.
Drop Tables
Currently if a player earns an achievement and their inventory is full, any excess items they earn will be dropped on the ground. These items can only be picked up by the player that earned them.
For more information about Drop tables, see the Mythic page on them here: https://git.mythiccraft.io/mythiccraft/MythicMobs/-/wikis/drops/Drops
Example
Reward:
Message: 'You did the thing!'
Drops:
- DIAMOND_SWORD
- BLACKSTONE 64
- EXPERIENCE 100
Skills: []
Skills
For advanced rewards, achievements support running Mythic skills.
Information about the Mythic skill system can be found here: https://git.mythiccraft.io/mythiccraft/MythicMobs/-/wikis/Skills/Start
Example
When the achievement is earned, the player will shoot out flame particles.
Reward:
Message: 'You did the thing!'
Drops: []
Skills:
- particles{p=flame;a=50;s=0.1} @self