Hey guys, for this achievement you need to gun down 10 enemies with the Machine Gun for your aircraft at the beginning of the level 'Throttle'.
You can hold
for the entire lvl to fire an infinite stream of bullets and focus mainly on maneuvering.
Try not to get too close to the ground if you can, and be extra careful at the pillars that fall near the later parts of the section.
When it gets to the part where you have to destroy the dam on the left, feel free to use your rockets (
).
If you crash restart the level, and if you simply need a bump of kills do the same or reload a checkpoint!
Here's my video guide if you need help.
Hope this helps!