Achievements/milestones will be immediately next on the list.
Chat rewrite is high priority. The actual chat and global chat server backend is done. It was delayed because of staff changes and we are still working on moderation backend tools to prepare for it. It will be worked on directly after the Zombie Massacre update.
This does not happen. We don't deviate from tasks as separate people, we do things as a group. We're a small team, so often times we physically cannot work on multiple things. We don't let people just decide to start and stop features - it's a group effort and a decision is made on what gets worked on for the next months. If there's ever a feature that gets delayed, there's always a good reason for it.
Fishing was put aside, as we explained before, for Zombie Massacre. It's left in the state it's in because we physically cannot work on two things at once. Fishing is a large feature. Cooking requires a lot of art assets, which are still being made.
Doing a Game World is a major project that improves the entire game over all, so a lot of the things that we worked on for Zombie Massacre can be applied to future tasks.
With our team size right now, this is the most efficient work flow.
I understand it is a frustrating experience from the outside, but developing a game is very challenging. You run into issues or elements of the game that just take more time than you expect. Developing a game of this scope with a limited team is even more challenging. Issues come up during development that will lead to a delay on a feature, and sometimes there's not much we can do immediately to alleviate the situation.
We also don't want to release features to the game that simply aren't done. Fishing for example has gone through many different prototypes and revisions and will continue to evolve until it's up to our standard to be released.
We are hiring new people as well. We've recently hired a new artist, programmer, and are in the talks with another animator.