All secret achievements:
This is a list of all 15 secret achievements and how to unluck them in Dead or Alive 4.
Unlock Spartan-458. 20 Gamerscore Points. Complete story mode with Helena.
Unlock Tengu. 20 Gamerscore Points. Complete Time-attack mode with everyone. That includes secret characters.
Unlock Ein. 10 Gamerscore Points. Complete story mode with Hitomi.
Unlock Helena. 20 Gamerscore Points. Complete story mode with everyone.
Unlock Gen Fu. 10 Gamerscore Points. Complete story mode with Eliot.
Achieve a Silver Star. 20 Gamerscore Points. Beat someone with a 15-19 win streak in DoA4 online.
Achieve a Gold Star. 30 Gamerscore Points. Beat someone with a 20 win streak in DoA4 online.
Unlock Leon. 10 Gamerscore Points. Complete story mode with Zack.
Achieve a Bronze Star. 10 Gamerscore Points. Beat someone with a 10-14 win streak in DoA4 online.
0 Gamerscore Points Achieve a grade “E” in DoA4 online.
0 Gamerscore Points Achieve a grade “D” in DoA4 online.
0 Gamerscore Points Lost 20 online matches in a row.
0 Gamerscore Points Lose 10 online matches in a row.
0 Gamerscore Points Lose 5 online matches in a row.
Play DOA4 for 5 hours 5 Hours Played (10 Points)
Play DOA4 for 100 hours 100 Hours Played (40 Points)
Play DOA4 for 10 hours 10 Hours Played (20 Points)
Unlock Tatami Stage:
Get all costumes and complete each character