Slayer's Testaments

Slayer's Testaments is an ambitious total conversion for Quake, created by the author of Quake 1.5, that brings elements of DOOM 2016 and DOOM Eternal to the classic engine. The mod implements key mechanics from modern Doom — alternate fire modes, a weapon upgrade system, high combat intensity, and aggressive enemies. Melee attacks, glory kills (in a simplified form), and extended key bindings have been added. Gameplay is faster and more challenging: enemies are more dangerous, resources are limited, and combat demands constant movement, while enemies can drop health pickups just like in modern Doom.

The project offers a massive amount of content: over 150 maps, including reworked campaigns from Doom 2016 and Eternal, levels from Quake and Heretic, and custom scenarios. There is a hub location (Start Map), challenges, and standalone campaigns such as Eternal Path To Destruction. You can also play through the original Quake episodes with the new arsenal, though the balance differs — for example, some enemies are replaced with stronger ones, which affects difficulty and pacing.

The mod features most weapons from Doom 2016 with alternate fire modes and modifications obtainable through special drones. The enemy roster includes a full set of demons from Doom 2016 and Eternal, including more dangerous enemy variants and bosses such as the Cyberdemon. However, some elements — such as full suit upgrades or certain Eternal mechanics — are not fully implemented or are still in development.

Visually, the mod combines the style of classic games with elements of modern Doom, using the capabilities of the DarkPlaces engine: detailed enemy models, shooting and impact effects including muzzle flashes, blood, dismemberment, and a soundtrack from Doom 2016. Despite some technical rough edges, Slayer's Testaments already feels like a nearly standalone game and truly shines on maps designed specifically for it.