I've played Zombie Army Trilogy long enough to know headshots never get old. Doom needs that, and it needs a slow motion element along with it that motivates the player to get more headshots. Can I transfer this excitement to Doom? There are mods with headshots and mods with slow mo, but nothing quite like ZAT. This is my attempt.
I added a DECORATE headshot hitbox to zombies and imps with a headshot counter on the HUD. Every time you pop one, the counter adds one. Every time the counter reaches a threshold set in Options a PowerTimeFreezer powerup is given as a bonus with extra time for headshots and a countdown indicator on the screen. The more headshots you make, the more time you get. Simple.
Headshots during the powerup are allowed but don't add to the total. Can't have your cake and shoot it too.
Dead Boxes is a slight expansion on my idea of stackable corpses. When a monster dies it spawns a tiny bridge. If enough die on top of each other they pile up. These boxes have a minimal amount of health and can be shot out of the way if they become an obstacle.
The Options menu can enable or disable either effect, and the "Bonus" slider affects the cutoff for the bonus (every 5, every 10, etc) and duration. Wait longer, get more time. You may need to turn off or turn down autoaim in game options for this to work well.
Update 12/9/21
Spoiler:Changelog
Spoiler:Update 1/1/22
Spoiler:Is it better to trigger bullet time whenever or work for it?
Now at v1.4