As for the second one, it's better. It's good, few little things that are off with the posing.
The major problem is that you could have used a speech bubble on the upper left corner of the screenshot instead of low center.
Text-wise, I think he was going for a subtitle look instead of comic. The First picture though, while creative, is empty. It's your art though, Don't let us make you change everything. Keep at it, For the first one maybe put a lamp over Isaac and a Necromorph just barely emerging into the light.