Guys, how do I unlock the challenges which give me the gears required to increase my tether strength/number of tethers? I saw one or two icons on the ground in some places, but they didn't unlock after I liberated the nearby towns/bases, and I liberated like 15 or 20 already in the smaller archipelago at the beginning of the game (grinding those wingsuit challenges to get the while-gliding boost).
Do I need to do story missions for that? I think the last one I did was the one with the militia attacking a town and destroying tanks. After that I just started flying around and liberating towns/doing challenges and kinda forgot about the main story.
I think someone here posted that you don't need to do story missions at all after you unlock the rebel drop (that is, aside from the fact that some weapons or vehicles require you to complete certain missions I think).
Also, the wingsuit is pretty underwhelming sometimes. I mean, yeah, it's fun when you're doing the challenges or when you are descending, but going parallel to the ground or climbing can feel slow, especially since you unlock the parachute boost way before the wingsuit boost and I just use the parachute to climb with the boost, then I reel in without the parachute and switch to wingsuit. Hopefully it will get better after I unlock the wingsuit boost, right now I feel like doing the challenges is way more fun than actually gliding around to traverse the map.
I don't know, I guess having those little red circles helps with my orientation and allows for more fun things to happen (I had challenges requiring me to go under a small ramp, right above water, basically sliding along a cliff... fun times).