Dementia/Hallucinate(Monster only)
When inflicted, several "faceless" creatures pop up at random near you and if you''re caught in their radius(similar to or on contact, they are able to cause dmg. The only way to avoid dmg is to run and dodge for the duration. The duration at it's highest is 15-20 seconds, the max of them that can pop up are 5. Phantoms can use this with normal attacks. There could also be a varied lost soul that can do it. The showings of this is blue fog and Question marks surounding them.
Chaff(Monster and Knight, affects only construct Monsters)
When inflicted, these can confuse enemies. By confuse, they affect targeting and slow down attack. An example is Rocket puppies losing the targeting properties they use, and retrodes losing their swipe tracking. Showings of this is a large sparkle aura around you(Aluminium strips).
With knights, projectiles lose some range, ASI decrease and fuzzyness on the screen.
And its strongest, it is for 3-6 seconds. In order to inflict it, you need a chaft grenade(Which are rare to find in construct areas, and also have finite respawn(Of 3) Gremlin Demos can inflict this with a shock stratum variation that uses this instead of shock.
Retaliate("PLAYER"only)
If a status enemy is hit my it's own status, fire on fire is an example the enemy will use a double attack of that status, basically, stun glitch reimplemented as a status. The showing of it will be a exclamation mark. It lasts how long the attack does. Lichen ones are also counted as this.
Fear(Monster Only)
When inflicted, player will lose all resistance and bonuses, and will run slightly faster. This lasts for 7-10 seconds and will decrease if in any candle light. As you've assumed from that is that this happens when hurt by Grimalkins. It is shown by a Swirl around players.
More coming soon.
Chaff sounds odd.....
Even though I don't use AA, that is punishing those who really badly need it. When you are not using a mouse, then you can't aim without it. Also, the finite ammo thing doesn't sound right. Do you mean a phial that gives the status, which drops from gremlin demos?
Dementia sounds like something which is good for phantoms. Really, if the phantoms got that, then we could actually feel a tinge of fright when we hear their voices.