Easy way to get the "long distance relationship" cheev is:
Where you get the rocket launcher for the first time, behind the hut.
There is also this big "one hit kill" weapon, sry forgot the name, take it and look to the little city-like thing and you will see a guard on a stationary machinegun, hop on the roof of the building and greet him with a bullet -> 20G
At the first time where you crashed, take the turtle -> *pop*
too easy, you will get this in the first430 min of playing.