Tekken 5

Beat the Devil Within or just play the game and he will unlock automaticaly. I forget how long it takes maybe a month? I think it counts from when your first save is made and if the characters are not unlocked yet they unlock after a number of days. Devil Jin is the last one. I think 30 days... could be wrong

Well i was trying to beat the game with everyone and when i had like 6-3 ppl left he automatically unlocked

u can unlock deviljIn by beating devil
u should do better if u lose 1 Time in story mode u never unlocked devilJinn

There are three ways to unlock Devil Jin and unfortunetly none of them are overly easy:

One - the most common way is to beat the Devil Within mini game which I find really quite difficult. This is probably the longest way to unlock him if you are better at the actually Tekken game style.

Two - This is the prefered option if you are best with just one or two characters. No one knows exactly how many rounds it is but playing approximately 150-200 consecutive rounds on arcade mode WITHOUT quiting. To make it quicker it would be best if you started with your favorite character on beginner ranking because those levels are easy to fly though. As far as I know losing a few times doesn't make any difference as long as you don't quit

Three - If you don't really prefer any one character then this is probably the best option. Beating story mode with every character also unlocks Devil Jin. However there have been several reports of people having him unlocked when they still had to beat story mode with three or four characters. Just beat the game as many times as you can and wait for him to appear.

Hope that helped. Good Luck.

Actually, there are only two ways to unlock Devil Jin:
1. Beat Devil Within mini-game.
2. Play 200 matches in ANY mode.