Now, that's more like it. A very beautiful, balanced and challenging megawad overall, enjoyed almost all maps at UV. This is how a set of maps should be done, easy levels at first and increasing the difficult on next maps. The best maps for me were = 06, 10, 11, 12, 15, 18, 32 and 24. I only didn't like the map 19. Certainly worth a shot!
Trash. Just avoid it. Author doesn't know how balance properly the levels, I was playing in HMP and after the 3th chaingunner ambush on MAP 01 I quit. Unfair gameplay, you shouldn't waste your time with this one.
Double Impact is a replacement for Knee Deep In The Dead that is as fun as it is challenging. The challenge comes from the hordes of demons you will face and unlike some other Doom 1 wads, Double Impact avoids creating difficulty by spamming Barons and Cacodemons. What is holding this set of levels back from being perfect are several minor issues that add up. The levels are not that great looking due to the reliance of stock textures. Combat is hampered by an overabundance of Door combat; that is standing inside a door way and blasting away anything before it can touch you. Finally the most glaring issue is how lackluster that last map is. Simply press the switches while avoiding Cyberdemon rockets and ride the elevator to the exit switch. Overall Double Impact is quite a good set of levels, unfortunately it is held back by a several small problems.