SucculentHyena is an avid fan of horror and wrote two fics last year. It Lurks Beneath is based on Stephen King’s It. 

Six phone calls, awakening something long dormant.

https://archiveofourown.org/works/42226086/chapters/106020531.

DOOM is based off the video game DOOM. 

In his terrible rancor between worlds and through time, the Doom Slayer was called upon by many seeking his righteous fury. These wretched souls adorned their champion in a mighty armour, bespoke upon them with intent to call upon the rage of the Doom Slayer.

https://archiveofourown.org/works/42659412/chapters/107159901. 

GreekGeek24 poured from her own grief and pulled from Irish mythology to tell the haunting story of Thevshi. 

Death had witnessed the rage of Achilles and the love of Patroclus; the fear of prostitutes and the cruelty of Jack the Ripper; and the loneliness of Steven Grant Rogers and the longing of James Buchanan Barnes. 

https://archiveofourown.org/works/42206283/chapters/106908699. 

Halloween wouldn’t be complete without werewolves.

When Bucky asks if Tony can move in with them, the first thing that comes to Steve’s mind is 'Over my cold dead werewolf body'.

https://archiveofourown.org/works/42773970/chapters/107453553.