Keras is shot in the chest with an arrow. Next time he is seen, his right arm is in a sling, and there's no sign of a chest wound.
While Major Sheppard and the team are looking at the status display, the landscape is having a hard time keeping up with the CGI.
Keras states that he is 24, and that tomorrow is the first day of his 25th year. However, the first day of your 25th year is the day you turn 24, not the day you turn 25. Similarly, he implies they live for 24 years, but when you turn 25, you have in fact already lived for 25 years.
At 7 minutes, there is a white five-gallon bucket visible in the children's camp.