1. Is turbo/auto-fire allowed?
2. How do you do so much damage with him is it mash or timing 3 bullets consecutively?

when Wakle fires the third bullet, you need to immediately stop pressing the button and hold it again. You will see Wakle shooting much faster and doing more damage. The other solution, press the shot button repedetly. (PD: sorry for my basic english xd)

Thank you for the reply! I was able to get it down pretty well and get a record with it.