I spent a lot of time at work and not enough on the game I'm afraid. But I think it took me like 3-4 standard days. I can't be sure though. I'll have to check my memory card. Wait, that won't work . . . I restarted. Hmmph!
I've unlocked nearly every secret. However, the "G" eludes me. I know exactly how to get it, but when I follow through . . . no go. I really want the "secret" ending too.