The third part is probably the hardest as a sniper will start to shoot at you when you are walking on the big O letter. It won't stop shooting at you until the end of the level. However there is a way to stop this sniper. Stay on the left side of the O until the last moment and when it's about to shoot, jump quickly to the right so the sniper will glitch and stop shooting. This will make the rest of the level a bit easier.
