Let's all be honest here, the nightmare creatures in don't starve together is extremely boring since you only have two significant once and they're practically identical. I think that they're should be at least 5 different nightmare creatures that each have different mechanics that make them both difficult and interesting. I thought of it and this is what I came up with:
- The Terrorbeak is already in the game and the mechanics are pretty simple and that's fine. I think that the Terrorbeak's damage should e increased from 50 to 75 and their health increased from 400 to 500. I made the damage incredibly high because it's so easy enough to deal with for players who know what they're doing and if they don't, they'll be punished harshly. The design should be upgraded to be a more menacing and horrifying version of the old version.
- The Crawling horror is once again, already in the game but it's just a weaker version of a Terrorbeak and that's it. I think that the Crawling horror should be some type of summoner that seems skittish and weak at first before it opens it mouth to release 2-3 little nightmare creatures similar to the Poisoned Birch nut Trees. They're health will be increased from 200 to 300 and they're speed will be reduced from 3 to 1.5. They're extremely slow but to prevent the player from simply running away from them, they'll have the ability to teleport a medium distance from the player. They spawn 2-8 nightmare minions that do 20 damage with 1 health and they disappear as soon as they get a hit. They spawn infinitely until you get rid of the main source, the Crawling horror itself but that won't be easy because of all the other shadow creatures. The design should be similar to the old one but there should be a space for the large mouth and the nightmare minions are like mini versions of it.
- The Rushing Fear is a shadow creature that are similar to clockwork rooks that charge in a straight line before stopping for a few seconds and charging again. It can't hit multiple people and will teleport a far distance after hitting a single player or getting hit themselves. They are pretty skittish with only 150 health but they damage of 50.
- The Panicpitcher is a ranged shadow creature that locks onto a single player via a lining leading up to them before shooting a shadow laser. The projectile can not be escaped but they only do 25 damage with 200 health so the projectile isn't very terrifying as long as you're wearing armor. They have a chance hitting multiple players if they all line up stupidly.
- The Buried Fright is the last shadow creature and it's the area of effect specific one. The Buried Fright will attack by summoning clusters of spikes beneath players similar to the Antlion and are completely avoidable. They do only 40 damage and they have 200 health. They spawn those spikes in multiple areas and they can launch 1-5 spike clusters at a time, each having different sizes. They do not warn the player of where the spikes are coming but they are avoidable as long as you keep moving in a good direction.
Notes: time you're insane, you Each spawn at least one of each creature and the longer you let them live, the more of them spawn until you eventually die. I wanted to include this but I was too lazy but I think that each character should have their own specific shadow creature that represent they're fear. This'll give an interesting twist and can possibly make way for lore hints. Sorry for my bad grammar, English is not my main language but I tried my best. If you have a different idea for of these then good for you.