Further details and an in-depth explanation may be found here.ĭelirium only has damage scaling while transformed, not while in its main form. Upon defeat, the screen starts to glitch, fills with static, and the room switches between different environments, while short scenes from the current run are played ending with Delirium screaming and bursting into a small puddle of blood.Īnima Sola - Defeat Delirium as Tainted Jacob.ĭamage scaling is an unclear mechanic introduced by Nicalis in The Binding of Isaac: Afterbirth to provide a more challenging experience to the players, enabling some enemies to retaliate against high damage attacks by deploying an "armor" of a sort to greatly reduce the amount of damage taken. If Delirium is being dealt damage at a significantly high rate from multiple tear sources, he will attack, teleport, and transform at extreme speeds.Destroying non-Delirium segments when he transforms into segmented bosses can also temporarily trigger this effect.It also takes on a reddish hue to signify this change.As it takes damage, it becomes more aggressive: moving, teleporting, transforming, and attacking at a faster rate.
Occasionally, it returns to its main form to perform projectile attacks at a faster pace.Cannot transform into Mega Satan, rendering its unique sprite unused.Cannot transform into any other Repentance bosses. Can transform into Baby Plum, Bumbino, and The Pile, but only Baby Plum has a unique sprite.Additionally, many of Hush's attacks do not work properly and the sprite is also unfinished. In order for this to happen, very few bosses must be encountered in the run. It is unable to properly transform into Hush's true form.Whether it turns into a Champion variant or a regular variant is random and does not depend on which variant was previously defeated.In rare occasions, it spawns a separate copy of the boss it transformed into.In rare occasions, it can transform into two or even three bosses at once.When transforming into a segmented boss, only the first two segments share Delirium's hp the other segments have separately generated hp and can be defeated separately.When transforming into certain multi-phase bosses, such as Isaac, Delirium copies the phase that that boss would be at, given its current health percentage.When it transforms into a boss, Delirium retains its own health, not the health of the boss it transformed into.Transforms into bosses previously encountered during the run, which can include major bosses such as Mom or It Lives.The projectile size per each attack is random and varies from very small to moderately large.A stray short-range projectile in a random direction.A burst of projectiles that travel outwards in random directions.A spread of 5 projectiles in Isaac's direction.4 lines of 3 projectiles that spiral outwards.