Slide ------ fight and run away, or run poison when some relatively high slopes. You can apply medicine or shield while you're coasting.
When you are close to the troll, you should use more sliding, and when you rush to some corner positions or people behind the cover, you should use more sliding to play the first shuttle, and try to observe the terrain of your sliding track when you rush, if you can slide to the second bunker after each assault, then you are already a very powerful pace-end.