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You NEED to have a retry option for beginner mode. I was having fun up until the point when I died because I made a little error when it came to what I thought I should have bought. No retry option? What, you expect me to know exactly what the weapons are like and what I should buy? I don't want to start all over if I make a little mistake, I want to start at the previous buying screen with my original money and items so I can keep trying things and get a feel for the game. I didn't want to sit through the same levels all over again. If I wanted to start over again, I'd close the game and restart it. :)
I'm not complaining that the game is too hard. A game can be easy or hard, but at the end of the day, it only matters whether it was fun or not. Sitting through the same 15 minutes worth of levels that I just completed just because I wasn't familiar with the items isn't my idea of fun. I'd sooner just move on to another game on NG.