Here are the secret achievments for DNF Duel, if someone is interested.
In the face of will
원래, you need to complete 5 Stories for any character.
Advocate Of The Gate
Pretty much the same, as the previous.
But now to complete all stories, except for Lost Warrior (he doesn’t have one, 그것은 것 같습니다)
Gallerist
You need to buy literally everything in the Gallery
All art, 음악, movies, voices, you get the idea
끝났어 100 Illustrations, 어느 비용이 들까? 100 금 각. 그 다음에, Character Voices cost 1,000 and there is one collectible per character. For the BGMs part, you’ll need to buy 15 tracks that cost 500 각. 마지막으로, there are only three movies, but they cost 3,000 금 각 — ...을 더한, you need to complete the Story mode to unlock two of them.
몸소, I’d recommend using some software that could spawn you ton of money.
Veteran Fighter
300 Online Matches, it does not matter, win/lose, ranked/room.
If you like playing with people you will get if eventually.
그렇지 않은 경우 – WELCOME TO THE JUNGLE.
Victorious over Hardships
Defeat the strengthened Lost Warrior in Arcade mode.
그래서 기본적으로, its an Extra Unlimited version of the Lost Warrior.
Just dont die/lose a single round and Good Luck with that one.
At the End of Wandering
완벽한 10 matches as Lost Warrior (you need to unlock him first, ofc)
And thats basically it.
And that is all, 여러분.
I do not see any reason in explaining any other achievment, since they are mostly self-explanatory.
Record some moves in training mode, play there for an hour, complete all combos and challenges for one character (I personally recommend Crusader for this one). Grind a lot of Online, play arcades, story mode, try out every character and so on.
게임을 즐기세요, 여러분, have a nice day.