And just to not create new threads another couple of questions:
Is there a mod/setting to see:
1) Current field of view of agents
2) Possible moves of enemy
3) Outline of visible enemies.
Chupakabras are near invisible in forest and tend to jump from behind a bush, which I though was covered by my guys.
1) Sort of, if you enable night vision (scroll lock was it? also button in extended menu). It shows night vision radius, though.
2) No
3) No, but you can hold Alt / (CTRL + ALT) to show directions above your agents and detected (including motion scanner-detected) enemies. Also sometimes map helps.
Most likely your soldiers saw the chupakabra, but it just blitzed them. Check out
how reactions work.
Chupas have very high (~70/110+) reactions and TUs, and your early soldiers usually have 60~ish at best. So until it spends TU down to ~94, it can run freely without your guys doing anything. Probably much less, considering difficulty increase in stats, soldiers spending TUs, and soldiers being non-best.