## Description:
Describe the PR.
Adds the Halloween Special Map - Achiran. It has 4 nations and will be
playable in game for a period of around 2 weeks during the Halloween
event.
## Please complete the following:
- [x] I have added screenshots for all UI updates
- [x] I process any text displayed to the user through translateText()
and I've added it to the en.json file
- [x] I have added relevant tests to the test directory
- [x] I confirm I have thoroughly tested these changes and take full
responsibility for any bugs introduced
## Please put your Discord username so you can be contacted if a bug or
regression is found:
DISCORD_USERNAME
Nikola123
evanpelle
