I did the second mission (New Eden) I was given multiple choices on how to complete it.
Spoilers:
Notes on gameplay, the AI is average, nothing great, but nothing bad either. The action is focused on non scripted events(ie random, still there are some). Stealth doesn't seem to be a viable method, the AI can spot you from a mile away, even with their back turned to you. Perhaps the stealth field upgade will change that or using light armor but I can't say, but even then you would still have to deal with constantly respawning enemies. The save system will put people off, it only has auto saves every 3 minutes and when objectives are complete.
Levels/hubs are big, well compared to most modern shooters. Health does not regenerate, and you do not have medkits(however there is a research called medkits which unlocks them), there is also a power that turns equipment into health. Ammo is perhaps too plentiful (which makes managing health too easy IMO), but that might change due to the choice of weapons(I chose bog standard assult rifle), I noticed a distinct difference from changing to medium armor from heavy. With heavy armor and mini gun I just stepped out and mowed everything down, with medium armor and assault rifle I had to be more careful (move behind cover, make use of leaning). Still haven't used melee yet, but it looks very standard to me.
I like the way it handles hacking, you have several choices to start of with, Destroy, Hack, Control etc, then once you've chosen what your going to do your given multiple viruses to choose from(attack, scan, defence, overflow), to bring down the targets HP to 0, you also have HP during the hack and the target will attempt to bring yours down to 0 too. While hacking the world still goes on around you, so you can actually be shot/killed while hacking, so you have to be careful when you make attempts.