Rune Trial Stones are floating structures which can be interacted with to attempt a Trial. Each trial has a different goal, time limit, and weapon. Completing a trial successfully will yield Runes, which allow further abilities to be used in combat.
They first appear in DOOM. They are large boulders that glow green, with a large glowing green rune on them. They also give off a loud, continual deep whispering similar to that of a Gore Nest, which likewise is often the first signal to the player that there is one nearby; they also let out a high-pitched buzzing of sorts which becomes noticeable upon approaching the Stone. After passing the trial, they crumble into a small pile of rubble with a much weaker green glow.
Description: Kill Imps with the Super Shotgun to allow movement for 4 seconds. Imps may be killed or spared at your discretion. Reach the Altar before the timer expires.
Description: Armed with the Heavy Assault Rifle eliminate all targets before the timer expires. Movement is only permitted for 3 seconds following any kill.
Description: Armed with the Rocket Launcher and using only the resources found in the area eliminate all targets before the timer expires. Targets will not drop resources when destroyed.
Description: Armed with the Gauss Cannon and using only the resources found in the area eliminate all targets before the timer expires. Health levels are critical and targets will not drop resources when destroyed.
