Here is the full list of all 12 Blackwell Convergence achievements. It takes around 2-3 hours to unlock all of the achievements on Windows.
Finish the game in commentary mode, from the opening menu till the end
Finish the game without asking Joey for a single hint
Defeat the Countess with one throw of an improvised lasso
Convince Frank that you are an artist on your first try
Keep a clear head, but others might think less of you
Find the secret extras menu
Finish the game at least once
Save Charlie Meltzer's life
While holding Frank's script, get though a performance without flubbing a single line
Distract the cat only once
Have a few drinks, but you might regret it in the morning
Give Allen some hope before he goes