Currently I'm the only person who works on the game, @KingGenius handles the authentication stuff and website (and everything related to this, e.g. wiki, bugtracker etc.), and @lucien.schuenke is responsible for our servers and the launchers for Steam.
Getting other people working on the game is not that easy, first we'd have to introduce them into the code, and that will be a very time consuming task.
We will not give up this project so quickly
If we ever decide to stop development (that will never happen under normal circumstances), we would make the project open-source, or find someone else who continues the work. But as mentioned, that will not happen, we will not give up.
We need help when it comes to assets, especially 3D models. A full rework of the current character model is planned (at the same time a clothing system and a female character will be introduced), that will be done in the near future 