Get a user's completed achievements

curl --request GET \
  --url https://app.trophy.so/api/users/{id}/achievements \
  --header 'X-API-KEY: <api-key>'

[
  {
    "id": "d01dcbcb-d51e-4c12-b054-dc811dcdc625",
    "trigger": "api",
    "key": "completed-onboarding",
    "name": "Completed Onboarding",
    "achievedAt": "2021-01-01T00:00:00Z",
    "badgeUrl": "https://example.com/badge2.png"
  },
  {
    "id": "d01dcbcb-d51e-4c12-b054-dc811dcdc623",
    "trigger": "metric",
    "key": "novice-writer",
    "metricId": "d01dcbcb-d51e-4c12-b054-dc811dcdc619",
    "metricValue": 500,
    "metricName": "words written",
    "name": "Novice Writer",
    "achievedAt": "2021-02-01T00:00:00Z",
    "badgeUrl": "https://example.com/badge1.png"
  },
  {
    "id": "d01dcbcb-d51e-4c12-b054-dc811dcdc624",
    "trigger": "streak",
    "key": "3-day-streak",
    "streakLength": 3,
    "name": "3-Day Streak",
    "achievedAt": "2021-03-01T00:00:00Z",
    "badgeUrl": "https://example.com/badge2.png"
  }
]