Complex sentence: Bizarre enemies that are completely invisible to the naked eye Wraiths can only be seen with aid of Infra-Red goggles, attacking at such great speeds you may well be dead before you get the chance to see what hit you.
Split into simpler sentences: Bizarre enemies that are completely invisible to the naked eye Wraiths can only be seen with aid of Infra-Red goggles. Attacking at such great speeds you may well be dead before you get the chance to see what hit you.