Cobra (1986)
If this were a spoof it would probably get top marks. This film is illogical and ridiculously stylised in a way that just screams 80s.
The protagonist is constantly undermined by detectives as he proposes blatant truths about the case that they are too dumb to consider. Please note, the protagonist is not a detective.
He's assigned to look after a key witness after she identifies one member of a gang involved in a series of murders. What's ridiculous is that while she doesn't know she'd seen a killer when she first sights him on the side of the road, she does when he tries and fails to murder her too. By the end of the film the entire gang are trying to kill her, all unmasked and in full daylight, clearly visible to the public.
Finally we get the main villain armed with a knife claiming that, as a cop, Stallone isn't allowed to kill him. Excuse me? The villain then insists that he'll be able to get off with an insanity plea. (Erm, you want to be stuck in a maximum security asylum?)
Sadly Stallone's ridiculous fashion of wearing sunglasses indoors seems confined to the opening action scene. Particularly since, besides being entertainingly daft in clichéd ways, the film itself is actually pretty terrible.
You need to go into this film expecting it to be terrible. If you do, you're in for a great time.
C+