Hints
To access the super handy map screen, stop in your tracks for a few seconds and wait for the pause button to appear.
Collecting trinkets is a fun diversion, and they give you Game Center achievements and bonus stuff for the Snapshot mode.
You can make a snowball in any area where snowflakes are falling, by making a pinch gesture. This will dispatch enemies with ease.

Embark on an inspiring mission of human connection beyond the UCA. Sam — with companions by his side — sets out on a new journey to save humanity from extinction. Join them as they traverse a world beset by otherworldly enemies, obstacles and a haunting question: should we have connected?