The Illborne goblins have weaponized their environment. Documented traps include:
Because the game is originally in Japanese, technical setup is often required for international players: Goblin breeding. (Dropping guide) - Steam Community goblin burrow illborne
The game revolves around a cycle of base management, tactical breeding, and strategic combat: The Illborne goblins have weaponized their environment
The Ill-Born are a type of goblin that has adapted to life within the dark, damp environments of goblin burrows. They are born and raised within the burrows, and over time, have developed distinct physical and cultural characteristics that set them apart from their surface-dwelling goblin kin. and over time
Progression is tied to clearing specific maps to unlock new events and heroines: