Deltatry attacks by firing a blue sword-shaped laser and launching slow red and easy to destroy projectiles that will block your shots (on higher loops it will also release blue projectiles that explode but will stay on screen for 8 seconds). It also uses Fire Dragons, possibly the same species as Intruder, as living weapons. Also, every once in a while, it'll get a blue outline and it'll start moving around spastically, launching green lasers.
On lower loops, it "warps" to a location and unloads 3 lasers across. On higher loops, it'll "warp" around much more erratically, shooting its lasers as it moves along.
- Interestingly, when Deltatry is defeated, its fire dragons turn against it and destroy it. It takes itself out in a gesture of honor as it rather destroy itself than being destroyed by the player.
- It is possible to get behind the boss as it fires its laser, but you'll get stuck when it calls out the Fire Dragons and die when it moves backward as it fires its shots.
- This boss is inspired by the ship from Konami's arcade-exclusive shooting game Trigon. Both of its attacks are based on the smart bombs used by Trigon's ship.
- As with numerous other bosses, this and the dragons it summons has a Yu-Gi-Oh! card- Delta Tri and Trigon.
|Ships||Vic Viper • Lord British • Jade Knight • Falchion β|
|Stages||Beyond the White Storm • Requiem for Revengers • Into the Crystal Cage • Ruins of Silence • Organic Fortress • Green Inferno • On the Event Horizon • Formidable Guardians • Fate...|
|Bosses||Blizzard Crawler • Grave • Nobil • Shining Core • Moai Dimension • Mad Skin • Stinger Kid • Hunter Fang • Giga's Rose • Kraken • Laser Tetran • DeathDouble • Parasite Core • Triple Core • Deltatry • Juggler Core • Neo Big Core • Heaven's Gate • Boost Core • Gunner Wall • Heavy Ducker • Sol • O.V.U.M.|
|Big Cores||Big Core MK I • Big Core MK-I Rev.2 • Big Core MK II • Big Core MK II Kai • Big Core MK III • Big Core MK IV|
|Big Core variants||Beacon • Blaster Cannon Core • Bubble Core • Circle Core • Coreship • Crater Core • Crystal Core • Dellinger Core • Desert Core • Heaven's Gate • Juggler Core • Laser Core • Lizard Core • Neo Big Core • Perla Meralda • Rexion Core • Rolling Core • Shining Core • Super Big Core • Terra Core • Vanishing Core • Genocide Core • Odin Core|
|Core-style bosses||Abaddon Warship • Covered Core • Covered Core MK II • Dead End • Kraken • Mayhem Warship • Metal Slave • Misfit Warship • Queensrÿche • Riot Warship • Plate Core|
|Pseudo-Cores||Death • Death MK II (DeathDouble) • Death MK III • Beta Core • Nobil • Triple Core • Crash Bam|
|Tetran variants||Tetran (Zylom) • Covered Tetran • Crystal Core D-X02 • Laser Tetran • Tenny Rop|
|Parody Cores||Candy Core • Decoration Core • Decoration Core MK II • Viva Core|