男主在回程的路上头盔已经被生物打开，与怪物单独相处了整个回到地球的过程，虽然全身被形似章鱼的怪物所缠绕，场面有点恶心，但是男主角却还能够完美的活着，然后很清醒的和渔夫们说“no”， 结局反转固然有新意，只是这个细节总感觉被减分了。而异星觉醒怪物结局怎么没杀死男主角的原因也许只有编剧们才知道，或者仅仅只是主角光环太重要!

　　本片导演对于结尾解释了一下，说是卡尔文学会了和男主沟通，然后男主没有伤害过它，所以就没杀他。

　　原文：“On the other hand, there is this idea that Calvin finally managed to communicate. Therefore, he never killed Gyllenhaal. He never saw him as a threat. He is the person that had some connection with this creature.”