Dromeus Komētēs

is an ability of Achilles, a Continuously Active-Type Noble Phantasm, that is normally triggered by stepping out of his chariot, Troias Tragōidia.
The embodiment of Achilles' legend that he is the fastest among all the heroes of all eras. It allows him to run through a giant battlefield in a single breath, and obstacles on the field will not slow him down even as he charges through a dense forest.
Although Achilles' physical prowess is high, it is not an impossible standard for a Servant, but his speed greatly stands out. That speed is equated to instantaneous movement, and for everything that enters into his field of vision, the distance between Achilles and his target can be closed instantly.Fate/Apocrypha - Volume 2 Its usage requires that his weak-point, the Achilles Heel, be exposed, but there are not many Heroic Spirits that can keep up with his speed.
In Fate/Grand Order, it is treated as a Skill in gameplay.
==References==
vi:
Category:Noble Phantasms
Category:Anti-Unit Noble Phantasms
Category:A+ rank Noble Phantasms
Category:Continuously Active-Type Noble Phantasms
Category:Noble Phantasms introduced in Fate/Apocrypha
Category:Noble Phantasms of Achilles