I’ve tried grenade jumps, rocket jumps, everything, but nothing gets me high enough. I even have overshields.
grenade jump. it just takes a while. i got it by using plasmas
use the boom skull and nade jump with a frag. it took me ages but i got it, the ledge is not as High as it looks. go for the very corner.
It’s way easier with overshield + rocket jump.
i got it while doing a frag 'nade jump while using an overshield (found just outside the structer where the skull is located). it took me about 7 tries but it wasnt that hard, it just took lots and lots of practice.
hope this helps!