How to Find the Hidden Navy Flame Dev Quest All Star Tower Defense X

All Star Tower Defense X (ASTD X) Update 5 comes with a lot of new surprises, and one of the most interesting additions is the Hidden NavyFlame Dev Quest. This secret challenge offers players gems, moves, and even emotes if you manage to complete it. If you’re curious about how to unlock and beat this quest, here’s a complete walkthrough.

• All Star Tower Defense X Codes
• All Star Tower Defense X Tier List

How to Access the NavyFlame Dev Quest

To start the quest, you’ll need to head over to Snake Way. From there, simply run forward until you reach the section where clouds begin to form. Instead of trying to climb through parkour, you can just slide up the path, which is much faster and easier. At the very top, you’ll find Navy Flame, who you’ll need to face in battle.

Rewards for Completing the Quest

Beating NavyFlame will reward you with:

• Navy’s Moves
• 1,200 Gems
• Chance to unlock a special emote

Alongside this, new update codes also give extra gems, rerolls, and even a Roku Fruit. Make sure to claim them before you dive into the fight.

Tips to Beat NavyFlame

The battle itself isn’t too complicated, but there are a few mechanics you’ll need to watch out for:

1. Defeat King Kai First – He powers up NavyFlame, making him nearly immortal. Taking him down first makes the fight much easier.
2. Turn Off Auto Skip – This lets you control pacing and prevents being overwhelmed by too many waves at once.
3. Beware of Unit Deletion – Some enemies can erase your units from the map, so be ready to replace them quickly.
4. Hill Units Work Anywhere – Take advantage of placing strong hill units like Ace in flexible spots.
5. Use Freeze Units – Characters with freeze abilities (like Esdeath with her passive Frozen Heart) are incredibly effective here, since they slow enemies and give you breathing room.

The quest lasts for about 10 waves, with the final challenge bringing out trial bosses. They may look intimidating, but with good placement and upgrades, they’re not too difficult to handle.

The Hidden NavyFlame Dev Quest is a fun challenge and a great way to grab gems, exclusive moves, and even an emote. While it may take a few tries, once you learn the mechanics—especially taking down King Kai first—the fight becomes much easier.

If you’re grinding Update 5 content, this is one quest you don’t want to miss. Not only do you get valuable resources, but it’s also a fresh addition that makes ASTD X even more exciting.