Argent Cells upgrade your health, armour or ammo capacity. Field Drones unlock powerful weapon mods. Rune Trials, meanwhile, unlock permanent perks for your character. But there's more to many of these hidden secrets than pure completism or curiosity there are gameplay benefits, too. The classic Doom levels are recreations of some of the great level designs of past Doom games which are a pure hit of nostalgia. So what are you looking out for? Doomguy collectibles are just cute little extras which will get you an Achievement/Trophy called 'Every Nook and Cranny'. Watch on YouTube Our Doom secrets, collectables guides
