Achievement System

[mtadayz]

That's actually something completely optional, but I suppose it would quite fun to add, with server owners potentially being able to add their own achievements. They should appear in the Journal, possibly as a new page.

Whether or not players should receive an item upon getting an achievement is open to debate.

[neves768]

i'm working on it
based on time, i think Renkon won't started the development.
Edit: almost done