Yes, it DOES take quite a while to earn the badge, how ever fyi :
I've allowed Sushi to take over until Round 20...it seems to start buggin out...(missing the blowfish - ive even had to take over manually out of frustration) Close everything out and start over with Round 1 - Blowfish are introduced in Round 3 - but then Sushi takes over like its supposed to...it doesnt miss ANY blowfish. Got my badge in a shade over 4 hours.