Count Thunder
Count Thunder seems to just be a style akin to Vergil's Dark Slayer and Dante's other styles as noted on this description.
Broken Gear
It seems likely by its silhouette but if the Broken Gear is part of
the 6 sacred artifacts Matilda sealed a demon Lord's power in.
Having it as an item like the Book of Demons which is one of the 6 artifacts, could be a thing, there's another chapter to Count Thunder's story so there's more to learn.
From what I can muck up for now....
Broken Gear - Allows its user to travel through time, different timelines or see into the future or past. Broken Gear does this (I presume) through the Memory Corridor, which it's user traverses.
Time Travel
1.
Sends V back from DMC V (since that's when he was created around)
2. V comments about
being in the same place but at a different time after being sent back.
Precognition
3.
Vergil sees himself fight Pluto in the future, and when he stabs Dante with the Yamato at the end of the Count Thunder mission.
4. At the start of
V's mission he sees himself obtaining the Broken Gear,
then gets it at the end of the first mission.
Dimensional Travel
5.
Vergil: Count Thunder goes Into the Memory Corridor to access the Chaos timeline.
Retrocognition
6.
V uses the Broken Gear and sees a DMC 3 era Vergil fighting Pluto. (I presume is the past to V)
Would this class for abilities as Time Travel, Dimensional Travel, Precognition and Retrocognition?
Memory Corridor
Time Travel
1.
Memory Corridor letting the hunters fight enemies from the past.
2.
Dante going through the Memory Corridor in chapter 14 to obtain the Inner Star item.
Hellfilth note
One of the nightmares demon thingies Hellfilth creates is
Nightmare Calibur, the
non nightmare Calibur is introduced in the Chaos timeline as the Shadow of Calamity. Guess a nod to her statement about
her wondering beyond time and space since she is able to create things from other timelines.