== Skill Collector - Nero ==
** Acquire all of Nero's skills. **
Since you can decide between 3 character campaign, you need to buy all skills of Nero, from the Shop. You'll pay there with Proud Souls, the more you buy, the more expensive will be skills to get. In total you'll need 290.150 Proud Souls to buy everything. You won't unlock the Trophy if you buy all Skills from the other characters, luckily all Proud Souls are stacking to all characters, so there's no need for extra grinds.
For people who haven't bought anything from the PSN Store. For average players, you'll get it in around 2-3 Playthroughs. Depends how good you are. If you can achieve high scores on the Missions, you'll get more Proud Souls, which means you're able to get them faster.
If you bought Proud Souls from the PSN Store, you'll only need close 100k more Proud Souls.
But keep in mind, even if you have bought all skills from Nero, you will still play Nero/Dante campaign 'til at least Mission 9, so you need to beat Mission 8 before. Getting Credo's Shield is a Story related ability. So there is no way, to avoid the Nero/Dante campaign, if you play as one of the other characters or you have allready enough Proud Souls before you get there, like it happend to me.
If you can't play with them, or they're still one of your last characters you'll need to play, just play on Heaven or Hell, to be on the safe side.
Some advises during your grind to the Trophy...
If you play the entire campaign as Nero/Dante, i would suggest to buy as your last Skills "Red Queen Combo B" and all kind of "Table Hoper". RQC-B is not a very usefull move, to built up point, enemies have a large oppening to attack you and this move is basically a very slow one, compared to the others. Table Hoper is only a very usefull technique, if you can avoid attack in the last frames, which is very hard to do, if you aren't familar enough with the Game. So for average Gameplay, it will be kidna useless for you.