Listed below is the number of
hits it takes before the light exposes:
Normal: 4 (?)
Very Hard: 6
Dante Must Die: 7
plan is to hit the panels
one time less than the number listed above.
For example, on Hard mode, hit the panel
4 times first and stay there right by
it. Doppelganger will soon
dash towards you to attack.
he gets close enough, hit the panel one
last time and the light will expose on
him. That is when you attack.
Timing is important so get used
to it to avoid misses. He doesn’t
stay vulnerable for long so repeat
this for another 20+ times or so until you
take him down. (Yes I know it's tedious...)
I recommend using the Force Edge to do
the panel hitting. It's faster and
has more hits. Note that LV2 Helm
Breaker gives the panel 2 hits.
If Doppelganger attacks before you can even hit
the panel enough times, jump away.
one other attack is a ground blast. Fortunately, it
is rather slow and is easy to avoid; just keep running.
Exposing ALL the panels will make
Doppelganger vulnerable for a longer
time, but he will attempt to shut the panels
down (using a black orb) one by one when he sees
that many have been exposed. Though, it is possible for you
to deflect the black orb
back at him with a melee attack. This
will save the panel from being shut
and damage him at the same time. However, in
the harder modes, Doppelganger
learns to deflect it back at you too
so you may have to deflect it a few
times before it finally hits him.
Video demonstration (Coming