If you want to play last level just go level folder find the file FF_02.xpc and copy it.
Then go to folder AI and paste it
And rename it as AI_01.xpc
(Create a backup of this file before processing)
Now you could go to final level from first level.
Level 1: Easy kills:
In level 1 in campaign mode you must destroy the drill bots and crawlers.
In order to destroy them quickly, use the red rockets as your secondary weapon.
First fly towards them, then fire one rocket and two bullets. Then just ram
them and they will be destroyed. Sometimes you will lose health, but there is
a chance it will give you health points.