In the third chapter of the series, players will embody the Slayer in a grim, medieval-era battle against the forces of Hell ...

The rest of the trailer is interspersed with first-person footage showing off the various weapons, like the tossable shield ...

Doom: The Dark Ages is a prequel preeminently focused on ... to transition from melee strikes to guns to shield play to an execution or glory kill, and not feel like there's a break in the action." ...

In this, Doom: The Dark Ages aims to deliver. Even so, if you ignore the details, the crux of what I saw was relatively straightforward enough for even newcomers to Doom's lore to grasp.