Don’t panic, be safe.

When everything goes wrong …

… you better hope you saved your game.

In other words: panicking and berserking soldiers are implemented, but to compensate for that battlescape savegames -finally- have been implemented too.

Since our savegames are not just binary memory dumps like in the old times, they are readable yaml text files, you’ll have the whole battlescape terrain – tile by tile – nicely described for you to edit and play with.
So you can also clone your own aliens, using copy-paste