Note:
Updated with v1.1
I realised that I completely stupidly forgot to remove the "blow fish" skills from the skill set. They exit purely to help me gauge enemy hp amounts at various levels for troop tests and are (fairly obviously, I suppose) not intended as real skills.
The few downloads before I updated this won't be affected, as they won't cause any bugs or affect gameplay; you just have to....not use them, I suppose.
Or you could use them, but it'll kinda kill the challenge! :D