I just finished the patch.
It features 2 new levels, and a new type of enemies.
How to install it:
1. Download the demo from here and unrar it.
2. Download the patch from here and unrar it.
3. Copy the patch's file into the demo folder and overwrite the files if you have to.
4. Run Minge_test.exe
5. Have fun playing the new levels.
There is a bonus level in level 5, visit it for a few bonus points.