Hints
Ducking can be a useful way to avoid the hail of bullets coming in your direction.
Freeing the hostages will likely bag you a gun upgrade or some new bombs.
Don't be too worried if you turn into a mummy, for you can still find a potion and turn back.
Right before the battleship on the first level there should be a guy hanging above you. Shoot at him and he will help you.

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?