Welcome!You're playing really well. The freon players are generally pretty scarily good. Did you play something else before that to aim that well or are you just a fast learner?
Contrast? Yeah you have to know how far you can fall without damage. You can dodge off a wall (double-press direction key) half way down and have no damage.
I'm better at thawing than shooting. Best at shouting "no thaw ffs"
Have you seen the hints and tips on the Freon guide on the front page? One I keep forgetting (even though it's my code) is that pressing m or n shows you the route to the closest frozen teammate.