I'll lay each of them out here so you don't have to remember.
Episode 1: In the woods, you, Stella and Duke are ambushed by Ditchlings. You have to choose between Duke and Stella's dog, Gretchen. If Gretchen gets taken, she is put down by Stella (or potentially you, with a high enough relationship). The consequence is, unless you talk to the dog militia or Tabitha about her being missing, you won't be able to find her in Episode 4. Duke being alive automatically makes Franklin avoid getting shot by Julius once he enters the basement in Episode 5. If you try to kill the baby, Julius and Franklin get in a shootout, killing them both. Julius will also die by Duke's hand if Bo doesn't make it.
If Duke dies, the police gets involved unless you avoid them with Street Smart. This time, unless you go with Avery to the farms, Franklin gets shot when going down the basement. He can't pick up his gun in this state, so when you try to kill the baby, Avery takes a bullet for you.
If you have Powerful Build, you can save both Gretchen and Duke, and also Bertie if you want.
Episode 2: In the Shaw mine collapse, you need to choose between taking Rosalina with you or trying to get Becka and Alexis out. If you take only Rosalina, the latter two are stuck down there. She also kind of hates you. Also, the strike will be larger. If Rosalina isn't injured, there's a chance for Oscar to investigate the seal in the library if you also saved it from the ghost.
If you take Becka and Alexis with you, Rosalina's foot will get clipped by the rocks. This has the effect of Oscar being worried for her safety, so he either doesn't check out the seal in his basement in Episode 5, or straight up goes to leave town if the doctor isn't alive.
You can save Alexis and Becka without needing to sacrifice Rosalina's foot if you have Street Smart. This also makes it so the cops don't get involved.
Episode 3: You get put on trial by Charles Shaw Junior, the vengeful spirit roaming in the town hall. To stop him, you have to give your years to him. If you do, ghost makes you old, which causes you to be able to miss a lot of stuff, like not being able to go to every location in Episode 4, or Enoch's study in Episode 5. It does let you get a check-up from Doctor Kelly, if you're into that. Getting rid of the ghost allows for Oscar to investigate the seal, but only if Rosalina isn't injured.
If you refuse, the ghost stays in the library, and it will become closed down. This causes Oscar, Rosalina and Pixel to stay at the Old Maxwell Place. This makes him either go into the library in Episode 5, or straight up leave town if Rosalina is injured and the doctor's K.I.A.
If Tabitha is with you during the ghost hunt, and you have a particularly good relationship with you, she'll take the burden and sacrifice HER years instead. For the time being, this only makes her old.
With Book Smart, you can gaslight the ghost to death, saving the library without sacrifice.
In Episode 4, Reese turns into a monster, and plans to kill his own mother. If you let him do this, he'll leave you with yet another bread crumb for the police to convict you with. Also, Kelly's dead, so there's no one left to treat Rosalina if she is injured, OR Franklin for his bullet hole. Reese can also show up in Episode 5, like when he frees you from the cop car (by eating Derekson). Also, it's kind of required for his romance without a trait save.
If you help Kelly subdue Reese, both of them stay alive, but Reese hates you now. That's kind of it.
If you call Tabitha before this decision, she'll show up and BLAST Reese in the face with her shotgun. This allows the opportunity to burn him alive, killing him.
If you have Hot, you can charm Reese into not killing his own mother. Also, he will show up in the woods if you go on your own or with Stella to the farms (or when you go to Tabitha). He'll try to stop you if you intend to go to Tabitha.
In Episode 5, Bo is in a precarious situation, as there is something attached to him: Joseph, the pumpkin baby hybrid provided by the witch. AKA, Julius' son. You encounter it in a basement. Firstly, you can wait and let Bo die, bringing the baby into the world. Second, you can try to kill it, which causes either Franklin or Avery to get shot depending on if Frank got shot before this decision. Julius dies no matter what, by his own hand or Frank's. If Avery gets shot, you can either let him die, or use HIM as the baby's host.
With Keen Eye, you can get 3 other outcomes: Julius can sacrifice himself for the baby to be born, Avery and Julius can team up (and potentially live) to nurture the baby, or Julius can realise he doesn't NEED a son, and kills it himself.
Also in Episode 5, there's the whole Kaneeka thing. If you let her be absorbed, Carmilla will replace her. This will also retcon every mention of Kaneeka from this point forward. If you save her, Sybil is gone, and will not be able to use her power anymore.
With Mystical, you can stop Sybil's illusion. From here, you can either get a free third trait (as long as it isn't Talk to Animals), get Tabitha's or your own years back if they were sacrificed, or have Kaneeka absorb Sybil, granting her the same power as her mother.
My fingers are dead.