Lol, 2 hours for a female mutant egg to hatch. That's a little ridiculous. Also, when you're fighting 2+ enemies, you can just double click on the enemy youre not fighting to instantly attack it.
Lol... I got to level 3, and I got stuck at the "You have to be level 6 barrier, I was level 5 and I killed all the enemies, and I wasn't able to bring up the pause menu. This blows.
Easiest hard badge i've ever gotten.
To find the code, use the looking glass type object in your inventory, and start from the very beginning. There should be hidden green letters.
One thing that helped me: If you get the Ultra Bomb generator, you can just leave it on the screen that shows percentage of enemies defeated in the previous level. They just keep on regenerating.