Okay, a film about people being stalked and killed by a banshee!!! was pretty interesting at first, especially because as we all know, said critter can make people hallucinate.
Actually, the oddity of the monster was pretty much the only thing setting "Banshee!!!" apart from the average creature feature and unfortunately, not much becomes of it. The banshee!!! does naturally use illusions but inconsistently.
The banshee!!! does wreck some things, like cars and such, unlike many other creature features. Additionally, many supposed central characters are dispatched pretty quickly, and at least on scene featured the banshee!!! killing multiple victims within one scene.
However the protagonist is the most irritating character. She comments on how some guy named Lake keeps stalking her; which is at least an exaggeration, although his making moves on her aren't too common, certainly not nearly as common as her comments about him. Yet apparently she finds his immature jokes funny (in one scene, she's the only one laughing) and... actually it's unclear how much he's bothering her.
The only scene where he is occurs directly after said protagonist flirts with a guy she just met & they start mocking Lake. Naturally this instigates conflict, after which the protagonist calls Lake out on his thinking about her being inappropriate in the situation. Lake also wasn't currently doing anything that was cause for ridicule. Naturally nobody calls out said protagonist out despite her.