Basics first: this achievement can only be unlocked using a player created in BAL. Not a real life player. Not a player that's already captain of their club. Nor a player created in edit mode & chosen in BAL. Player must be created in BAL.
My quest for 'Proud Skipper' saw my legend play 120 games across 2 full seasons.
The game randomly allocates a club for your player, so there's no choice in where you'll start. Big club, small club? It makes no difference. 'Proud Skipper' is unlocked solely by the performances of your legend.
In PES 2013 it seems you can no longer unlock this achievement in your first season; as possible in PES 2012.
Expect to play 2 full seasons at the minimum for 'Proud Skipper'. I did not skip a single game across my 2 seasons. That includes training games, of which I played 2, & international friendlies. Play 'em all.
I played for 3 teams in this period:
2 'fake' teams & FC Barçelona.
I transferred clubs in January in my first season & again in my second. So full seasons with one team are not necessary for 'Proud Skipper', it's all about your performances across the season.
For optimal ratings, it's best to choose an attacking position for your legend.
CF, SS, WF, AMF, R/LMF allow for the utmost contribution to your team. Goals & assists are a must. 8.0 & 7.5 ratings should be mandatory, though a 7.0 won't hurt. Now your teams AI & strategy can be baffling at times in BAL. They may play outright defensively for no apparent reason. I encountered this whilst playing on 'Regular' difficulty & my player was not getting the service he needed. I switched it down to 'Amateur' so I was able to save my team when necessary & still get those 8.0/ 7.5 ratings essential for 'Proud Skipper'.
After joining FC Barçelona in January, we went on to win the treble. My legend was pivotal in the club's success. It's worth noting that despite being Top Scorer/ Assists in all comps, I was not awarded 'Player of the Tournament/ Season' in any. Most likely due to only playing half a season for the club.
After winning the UEFA Champions League final, the last club match of the season, Puyol approached me & told me I'd be made captain for next season.
'Proud Skipper' Achievement Unlocked.
There you have it. Any questions, add a comment.