Hi, I just noticed today that the Silver Lifelike Tigrean Doll isn't included in the achievement (not that I saw anyway!). Should it be added?

None of the other achievements include Cherry or Silver either, I don't think they're considered "basic" colors even though they're also colorfills.

They won't be added because not all lifelike dolls sets have Cherry/Silver dolls.

The Chelon doesn't have them, namely.

The Nuclear Demi is another one that should be added to the achievements, though