Added achievements, slightly rebalanced point economy, added manual test input scene.
To run the app, execute mvn install -DskipTests.
Then, go to the setup folder. cd setup
Next, execute ./setup.sh install with an installation path of your choice. ./setup.sh install ~/Desktop/IdLearn
Finally, execute java -jar IdLearn.jar (you can now copy the .jar to a different location if you like).