I bet you came here to learn the route before anywhere else. So sit down and listen.

1. Eficient jetpack ascend - tap it, don't hold it
2. Rapid fire DOG amplifier - release RMB after projectile comes out and press it again.
3. Of course you can detonate DOG amp point blank and dodge it with I-frames of your roll
4. Infinite sprint - In options uncheck "hold to walk" and "hold to sprint", start sprinting, quickly press "walk" then "sprint", regain stamina while still sprinting. Problem, human endurance? Optional - rebind either button somewhere else (B, Mouse5, whatever). Just so you are not forced to press both buttons with single finger.
5. Everything else - WYSIWYG