Tyrian boss: Underdeli Defense Ship

Underdeli Defense Ship is a boss of Tyrian, fought in 1 level: Underdeli (episode 4).

Fights

Each fight lists the parts the game tracks with the boss health bar. Pictures link to each part's card in the bestiary; armor is at Normal difficulty.

Underdeli (episode 4 — group 1 of 3)

Picture: its biggest part.

2 parts, armor 6 (1 indestructible) at Normal difficulty.

Parts (2)

Underdeli (episode 4 — group 2 of 3)

Picture: its biggest part.

2 parts, armor 6 (1 indestructible) at Normal difficulty.

Parts (2)

Underdeli (episode 4 — group 3 of 3)

Picture: parts placed as the level spawns them.

11 parts, armor 6 (10 indestructible) at Normal difficulty.

Parts (11)

Name and sources

Fandom gives it as the boss of Underdeli and describes a red core first, then a front piece, then the ship; the game tracks three groups in that order (a red core, a front plate, the ship).

Technical names

Parts as named for modders: spike_fortress_12, bank_33_26, cyber_spheres_33, cyber_spheres_24, cyber_spheres_25, cyber_spheres_26, cyber_spheres_15, cyber_spheres_16, cyber_spheres_17, cyber_spheres_09, cyber_spheres_10, cyber_spheres_05, cyber_spheres_06. Sprite banks: Spike fortress, Bank 33, Cyber spheres.