curl --request GET \
  --url http://localhost/api/v3/achievements/definitions/{definition}

{
  "data": {
    "id": 123,
    "name": "<string>",
    "handle": "<string>",
    "region_id": 123,
    "region": {
      "id": 123,
      "name": "<string>",
      "handle": "<string>"
    },
    "currency": "<string>",
    "description": "<string>",
    "internal_notes": "<string>",
    "type": "<string>",
    "starts_at": "2023-11-07T05:31:56Z",
    "ends_at": "2023-11-07T05:31:56Z",
    "is_published": true,
    "display_level": true,
    "display_option": "<string>",
    "short_description": "<string>",
    "long_description": "<string>",
    "terms_conditions": "<string>",
    "earn_instructions": "<string>",
    "icon": "<string>",
    "image_url": "<string>",
    "levels": [
      {
        "id": 123,
        "name": "<string>",
        "achievement_definition_id": 123,
        "display_number": 123,
        "description": "<string>",
        "trigger": 123,
        "repeats": true,
        "repeat_interval": 123,
        "allow_multiple_earn": true,
        "computed_display_number": "<string>",
        "computed_trigger": "<string>",
        "meta": [
          "<unknown>"
        ]
      }
    ],
    "tags": [
      "<string>"
    ],
    "meta": [
      "<unknown>"
    ],
    "timezone": "<string>",
    "period": "<string>",
    "created_at": "<string>",
    "updated_at": "<string>",
    "enable_annual_earn_cycle": true
  }
}