The new prelude to chaos bundle, has some refrences to doom and quake. First of all the second color(the dark green one with the laser) looks like the color palett of the doom slayer. The new knife also looks like the sword you find later on in doom eternal when played on the second color. The skins also have a symbol on them that look like the quake symbol. When scoped in you can see some runes, those might also be a refrence to doom or quake or maybe not.