The Secret of Secrets

The Secret of Secrets is an Achievements (PvZ: GW2) that was added in the Trials of Gnomus DLC. To earn it, the player must enter the secret area located near the Chamber of Gnomes.

In the Town Hall, there is a key near a seagull. However, the seagull will not let the player keep it until the player gives the seagull 25 stars. After this, the player will need to go to the locked gate in front of the Chamber of Gnomes. A portal will appear and, after going through the portal and climbing some stairs, the player will find said secret area.

Strategies
The player must complete multiple quests from the Quest Board, due to the key requiring stars to be brought.