How to Play Last Defense

About Last Defense!, from BoardGameGeek:

You have just twenty minutes to save the city in the family-friendly co-operative game Last Defense! Players team up as a band of unlikely heroes to face monstrous threats, from space aliens and spider robots to an oozing building-sized blob! Roll dice each turn to determine how far you can move and how many actions you can take, with one re-roll available for those two dice. Clear rubble from the streets to discover tools you can use to defend yourself or recruit the specialists you need to defeat the monsters. The game's app audio track enhances the tension with urgent news bulletins announcing where threats are attacking. You are the last defense!