I totally agree. Even though I scrapped the difficulty level, I could have still added a more dynamic difficulty like you suggested. I like your ideas. To be honest, my ideas for difficulty levels were pretty basic, so you've given me something to think about. A one hit kill mode sounds neat! Also modifiers or a customizable difficulty setting sounds great. It's something I've seen in other games before and loved, so I don't know why this didn't occur to me!