There are 3 unreleased titles that come to mind, which are pretty cool to have (they each have a rotating animation above the player's head, and give some good-ish stats.
Obviously, they should be character bound, as the achievements in order to obtain them will be possible for any Solo Players.
Have it either be PvP or PvE related, or maybe even both.
PvP : Related to Ranked Battles (however the Staff will have to do something about the current mudosa farmers, i'm sure there is still random people nobody knows with 150+ win streaks).
PvE : Related to global farming (which you can clear on your own), such as creating new special loots that are spread among certain mobs, thus creating a totally new farming purpose, as people will obviously try to sell/buy these loots in order to craft their own title.
My idea would be to add a recipe of these titles through a Mudosa Exchanger NPC (thus adding the PvP part), and then having to craft them with some mobs loot (which could be added by Daneos on some mobs), zenys, etc... (now the PvE part)
That would be the "harder" idea.
The "easier" idea would simply be to make it another CCBD Craft, or put them through the Event Boss NPC, but that would be too repetitive in my opinion.
That may not sound like a straight up achievement but i'm trying to push something already existing which could be very good for the game, it could be called an achievement just by the fact that it won't be easy to obtain.
Rewards (titles) :
God of Gamblers ( 2con, 60 hit rate )
Lady Luck ( 2eng, 50 dodge rate )
Lottery God ( 2foc, 60 success rate)
Stats should be changed obviously, especially for the dodge rate one which might be too strong.
My idea would be :
God of Gamblers : 5 CON, 30 Hit Rate
Lady Luck : 3 DEX, 25 Dodge Rate
Lottery God : 3 FOC, 25 Success Rate
What do you think ?