140 emblems
100
You need to have at least iver 25 emblems to get a green egg in sonic adventure 2 battle
well i had 59-60 emblems when i saw 1 in the black market it was 5000 rings hope this helps
100.
You need to complete all 4 stories,so if you don`t do any stages other than those in story mode,it is 56 emblems.
It's kinda based the luck of your file. What I mean by that is the file randomly selects what eggs can be found in the Black Market. Once you get enough emblems for those eggs, then they might appear in the Black Market. Some files have different colored eggs than other files. For me, since my file has the Black egg - you need about 130 Emblems (when I first saw it in the Black Market). Hope this helped! :]
go buy the light blue egg RE:: After 105 emblems.
100
45
At least 100.
20
To Unlock Chaos Zero and other multi-player characters in Sonic Adventure 2 for DreamCast you need to collect all emblems...... for the gamecube all multi-player characters are already unlocked