Hello everyone!

In order to unlock all these options without completing all missions or installing external programs, all you need to do is to enter one simple code:

Just type boggysentme in the main menu. If you hear the sound of a door unlocking then you got it correctly. Have fun using Armageddon, or other superweapons, plus the extended scheme options! ;)
Source: https://worms2d.info/Cheats_(Worms_Armageddon)

The source of this code was included "secretly" with update v 3.8. If you want to know more about the discovery just check this link: https://worms2d.info/History_of_the_Full_Wormage_shortcut_cheat_code

Now go get some MASSIVE explosions!