WAD to jump and move. There is a phase mechanic, so don't get mad if you phase. Dodge the bullets. If there is a glitch double tap the green flag.
I used a tutorial on yt and copied a bit off of Speedy Stickman by gamerdude232(Check out his game it is really good). Make sure to also check out hgt studios, we have good games. Update 1.1: 3 new hard levels. Plus a time keeper so you know how fast you did it!