Out of all the games, how do you find the Reinforcements/Demon Goonies and the Rain of Fire/Thunderbolt/Soul Impact across the series? Haven't played KRO but have played the rest.
I noticed that Demon Goonies seem less powerful than KR/KRF/KRO reinforcements but the Pit Lord is by far the strongest Reinforcement, what with huge damage+splash fireballs. He only appears with random chance of course.
As for RoF vs Soul Impact, RoF has the Scorched Earth effect which is great, but Soul Impact has Feast of Damned which is really really good since it shortens the recharge time by a lot if you killed a lot of weak enemies.