BUNNYBastion Secrets Guide: Hidden Mechanics & Easter Eggs

Uncovering the Hidden World of BUNNYBastion

BUNNYBastion is packed with secrets, hidden rooms, and Easter eggs that reward observant players. While the main game loop of defending your bastion and upgrading your arsenal is straightforward, the developers at Last Wall Games have tucked away numerous surprises for those willing to explore. This guide reveals every known secret, from hidden upgrades to secret boss encounters, ensuring you don't miss a thing.

Secret Rooms and Hidden Areas

Throughout each 10-minute run, you'll encounter hidden rooms that offer powerful rewards. These rooms are often concealed behind breakable walls, require a specific key, or appear only under certain conditions.

• Breakable Walls: Look for walls with a slightly different texture or a faint crack. Using a charged attack or explosive upgrade will destroy them, revealing a small room with a chest.
• Key Doors: Some doors require a "Rusted Key" or "Golden Key." Keys are dropped by elite enemies or found in chests. Golden Key doors always contain a legendary upgrade.
• Time-Locked Rooms: These appear after you clear a wave within a time limit. A shimmering portal will appear near the bastion, leading to a room with bonus currency and a choice of two rare upgrades.
• Hidden Boss Arenas: If you collect three "Mysterious Sigils" during a run, a portal opens after wave 7, leading to a secret boss. Defeating it grants a permanent upgrade for future runs.

Secret Upgrades and Abilities

Beyond the standard upgrade pool, several secret upgrades can only be unlocked by completing specific challenges.

• The Carrot Cannon: Unlocked by finding and interacting with a giant carrot statue in the third area. This upgrade fires explosive carrots that deal area damage.
• Ethereal Shield: Requires you to complete a run without taking damage from the first boss. This shield makes you temporarily invulnerable after taking a hit.
• Bunny Hop: A movement upgrade that lets you double jump. Found in a secret room behind the starting area after you have at least three movement upgrades.
• Void Core: A legendary upgrade that converts all your damage to void type, bypassing enemy armor. Only obtainable from the secret boss mentioned above.

Easter Eggs and References

Last Wall Games has filled BUNNYBastion with nods to other games and internet culture.

• The "Last Wall" Reference: In the fourth area, you can find a gravestone that reads "Here lies the Last Wall." Interacting with it plays a short, melancholic tune.
• A Hat in Time Reference: A poster of a character resembling Hat Kid can be found in a secret room. It has no gameplay effect but is a fun nod.
• Developer Room: By inputting a specific code on the title screen (Up, Up, Down, Down, Left, Right, Left, Right, Enter), you unlock a developer room where you can test any upgrade. This does not count toward achievements.
• Bunny Dance: If you stand still for 30 seconds in the bastion, your character will start dancing. Other bunnies in the background will join in.

Unlockable Secret Characters

In addition to the standard characters, there are two secret characters to unlock.

• The Void Bunny: Defeat the secret boss (requires three sigils) five times. This character starts with the Void Core upgrade.
• The Golden Bunny: Find all 10 hidden golden carrots scattered across different runs. Each run has one golden carrot in a random location. This character has a 10% bonus to currency earned.

Tips for Efficient Secret Hunting

To maximize your chances of finding secrets, consider these strategies:

• Use a high-mobility build: The "Bunny Hop" upgrade and any speed boosts make exploring much faster.
• Play on lower difficulty: On easier settings, enemies are less threatening, giving you more time to explore.
• Focus on one secret type per run: Trying to collect sigils, find carrots, and break walls all at once can be overwhelming. Dedicate each run to a specific goal.
• Check the map: The in-game map shows all room layouts. Look for gaps or unusual room shapes that might indicate a hidden area.

For more general gameplay tips, check out our beginner guide and upgrades guide. If you're stuck on a specific enemy, the enemy types page has detailed information.

Q: Can I find secrets in co-op mode? Currently, BUNNYBastion is a single-player experience only. All secrets are designed for solo play.

Q: Do secrets carry over between runs? Yes! Permanent upgrades like the Void Core for the Void Bunny and the currency bonus for the Golden Bunny persist across all future runs. Collectibles like golden carrots and sigils are tracked globally.

Q: Is there a secret ending? Yes. If you defeat the secret boss and have all four secret upgrades equipped at once, a special ending cutscene plays after the final wave. This is considered the true ending of the game.