At one point, Runaway throws a knife at a dinosaur, but in the very next shot, we see it drop from his hand.
The runaway and the nun are the last in line running through the tunnels, but they somehow manage to be the first ones to exit.
During the first fight between the Runaway and the Cyborg, the Cyborg's makeup disappears and reappears several times in rapid succession.
Cuts appear/vanish/reappear/vanish during Runaway's last battle with the Cyborg Master.
While fighting the dinosaur in the warehouse, Sister Ann takes off her sweatshirt twice.
During the news report on the dinosaur rampage, you can see that the cameraman with the news crew is actually holding a cardboard box with a lens taped to it instead of a real camera.
When Romero attacks the dinosaur in the living room, a split second shot shows a dummy instead of Romero getting hit by the dinosaur's head.
In the opening scene in the cyborg's ship a camera lens is shown clearly with the word "Japan" on it.
Most of the fight scenes take place in a warehouse filled with fully sealed but completely empty cardboard boxes.
When the cop fires his shotgun at the Cyborg Master and misses, the wall he hits wobbles.
The cyborgs capture the slaves from Earth because they cannot make things themselves, so they get the slaves to do it for them. But if so, then how did the cyborgs build their spaceships and time machines in the first place that made the slave capturing possible?