At the Hard Impact chapter, you will need to struggle with a terrorist by rapidly moving your stylus up and down the touch screen, but for some reason, the bar on the left goes up for a moment, then falls down to the red region. No matter how many times I've tried and how fast I move, the bar just move up by a little, then falls again. I've tried to max the sensitivity of the touch screen, but the bar still did not move all the way up. Any way of solving this problem?

 

That's what I have done. I've also tried sliding on other parts of the screen, but it still didn't work. Now there's already a lot of scratches on my screen protector -.-"

 

You have to do it really really really fast as well. But yes, that little bit is really pointless, I really pity the guys who don't have a screen protector on their DS when they try that bit....