Kano, Carter, Paul and Koening going out to attack the aliens is no different than Kirk, Spock and McCoy being the ones always going in harm's way in Star Trek (1966). Not realistic, but the way things are done in TV.
Right outside Alpha's airlock we're shown many rock formations. But Alpha is built within a relatively smooth crater. This same error is seen on Missing Link (the same airlock set was used in both).