High on science. Low on action. The ending is both predictable and boring. Gratuitous sex and foul language add nothing to the story.
When the lead-off for the story is "Trapped in the great dome, Darl valiantly defends Earth's outpost against the bird-man of Mars and his horde of pigmy henchmen", you know you're in trouble. I could only get past a few pages of the 1950's comic dialogue before giving up. Not interesting at all.
A decent little story. The author does an excellent job of creating tension and a sense of dread. The ending is unsatisfying, and completely glosses over the solution to the problem.
What starts out as a well-written story with an interesting plot turns into a quick, predictable, and unsatisfying ending. You'll miss nothing by skipping this one.