Lam started with Shaw Bros. Studios in the 1970's & established himself as a cinematographer. In 1981 he directed his first film One Way Only. It was a movie about illegal street races co-directed with The Killer star Danny Lee.
His style really came to fruition with The Seventh Curse (1986). It's an absolutely insane martial arts horror spectacle. In the movie a doctor/adventurer relays the tale of his most recent exploits. Dr. Yuen Chen-hsieh visited Thailand a year earlier & ran afoul of a Dark Sorcerer that placed a blood curse on him.
Chow Yun-fat gets top billing but don't get fooled as it's a glorified cameo. The film doesn't suffer though from his lack of presence. The plot makes sense even though it contains a fair amount of mystical mumbo-jumbo. It mostly careens from one action set piece to another.
You have a hostage shootout with the cops, a monk battle, a skeleton fight, a demon fight & so much more. As I mentioned in the subject there's some nasty practical effects. The initial outbreak of the Dr's blood curse complete with pulsating veins is well done. There's also a nifty demon transformation scene & the sorcerer controls a nasty little monster he throws at people.
He directed eight more films over the next six years. Most of which had the same level of bonkers energy combined with wild action & over the top gore. Then in 1992 he stopped directing for reasons that don't seem documented.
He'd had releases on DVD & Blu-ray before. Within the last year though many are getting cleaned up & being made available for the first time in decades. People are discovering or re-discovery the madman magic in his films.
I'd love to know more about him & why he stepped away. He seems like he could be an interesting documentary subject based on his time spent in HK during many years of their golden age.