Don't worry friend, I got the full answer for your problems:
Unlock étoile, star Blade toi have to unlock étoile, star Blade from Devil Within. Go to the first room in Stage 4-2, there is a breakable mur underneath the higher ledge. Transform to Devil Jin and press L1 + SQUARE to blast at the wall.
There will be some tiles appear after the mur is destroyed. Jump over the tiles and déplacer on to the suivant room. There will be a spaceship from étoile, star Blade in the middle of the room. Collect it and continue to beat Stage 4 to unlock étoile, star Blade. (Unverified) Unlockable: Start the Devil Within mini-game in Devil mode Make sure toi clear Devil Within at Medium difficulty with all the Evil Symbols collected. Go start a new Devil Within ou Stage Select. Hold down L2, Select and R3 while selecting. Unlockable: Final Stage 2 toi have to play 200 arcade mode matches. Unlockable: Devil Jin To play as Devil Jin, toi must complete Tekken: Devil Within mini-game.
Alternate method: complete story mode with everyone else and devil jin will be selectable.
Alternate method: toi can also beat the game with every character and play plus than about 200 games in Story Mode.
EktorUnlock Jinpachi's Movie To unlock Jinpachi's movie in Theater mode, toi have to lose to him and get a game over using any character in Story Battle mode. nina williamsUnlock Eddie Gordo Buy all the extra costumes for Cristy Montero custom mode. SeekoUnlock Theater Mode Beat Story Mode with any character. To play films in Theater Mode toi have to beat Story Mode with the character toi want to unlock the movie for (that's self-explanatory). Beating Story mode requires toi to play story mode with Christie, Eddy, Panda, and Kuma. Unlockable: Characters Anna Williams: Beat Story Mode two times Baek: Beat Story Mode three times Bruce Irvin: Beat Story Mode 4 times Devil Jin: Complete Devil Within mini-game, ou fight 200 matches. Ganryu: Beat Story, Battle ou Time Attack mode 6 times Heihachi: Beat Story, Battle ou Time Attack mode 8 times Kuma: Beat Story, Battle ou Time Attack mode 5 times Ling (School Girl): Win 50 Versus matches, and press right-punch to select Ling. Mokujin: Beat Story, Battle ou Time Attack mode 7 times Roger Jr.: Beat Story Mode with Kazuya Wang Jinrei: Beat story mode/time attack 5 times with different characters.