Tempest Rising features several hidden achievements and subtle easter eggs for dedicated players to discover. While specific details are often kept secret by developers, common types include:

- No-Loss Missions: Completing a mission without losing a single unit (excluding scripted losses).
- Speed Runs: Finishing a mission under a specific, challenging time limit.
- Specific Unit Only: Completing a mission using only a particular unit type (e.g., 'Thrall Only' victory).
- Lore Discoveries: Finding hidden data logs or specific environmental interactions that reveal deeper lore.
- Developer Nods: Keep an eye out for subtle references to classic RTS games or pop culture in unit quotes, map details, or mission names.
Check the in-game achievement list for hints, and don't be afraid to experiment or explore off the beaten path to uncover these hidden gems.