Lost Planet Question

I've found all the target marks on easy mode on lost planet, in order to get the pioneer achievement, do I need to do all different difficulties to obtain the achievement, as I didnt get the achievement.

 

if i were you, i would play it on hard or whatever, because that would cover all the easy and medium achievements all in one fowl swoop

 

thanks, I will play it again soon, still hooked on gears.

 

lol, gears is pretty sweet. you playing on insane? it's crazy hard lol

 

Ive beaten it on insane, started off with casual, followed by hardcore, and finally with insane, recently I've been playing it on live, cant get enough of the action, lol.

 

lol, same with me. i did casual first, hardcore then insane. now its all about the Live action lol