The hole in Solo's side dissapears when in a hut, just to appear later again. This continues throughout the movie.
When Solo is handling the spider, and Bill walks into the room and says, "Yeah, that's a nice bug", Solo says, "Yes, Bill. The anthropods are well-designed for their task." Spiders are arthropods, not anthropods. "Anthropod" is not a word.
When Colonel Madden is firing the tripod mounter grenade launcher at Solo in the village, you can clearly see the 40mm grenade rounds on the belt are just an empty shell and have no warhead to them.