FusionX is a 2.0 Hard Demon created by TrueOmega. It is inspired by Fusion by Manix648, and features that level's trademark insane dual segments, difficult sections, timings, moving objects, and bossfight, but in a remixed version. It is generally considered a Hard Demon.
The level starts with a rather tricky cube section with a few tough timings. Then there is a similar robot segment. This is followed by a rather difficult UFO section with lots of moving gravity portals and tricks. Then an auto cube results in the drop, with text saying "FusionX by Omega." A dual cube transitions into a very hard dual with the Cube and UFO, which later becomes Ship and UFO. Both sections require lots of skill and crucial timing. Then a relatively easy ship part results in a moderately tricky wave segment and an auto dual cube transition. Then there is a very hard dual with the cube and wave with another dual cube transition leading into a similarly hard dual of cube and ship. There is then a hard dual with both cube and UFO, requiring lots of skill. Then there is a rather hard dual mini wave. This is followed by a very difficult mixed dual of cube and wave, and then another hard dual of cube and UFO. Then there is a rather hard dual of cube and ship, followed by auto ship and cube parts. Then there is another auto ship part, displaying the text "The Fusion is Back Again..." and "Better and Stronger." Then, there is a very long triple speed Cube part with numerous hard timings and some memorization. Then there is a very tight difficult ship section with many gravity portals and orbs to account for. Then there is an auto cube part with the text saying "Ready?" Then there is an extremely detailed and rather difficult Ship part that consists of a very hard boss-fight that shoots many lasers. Then there is an auto cube part that ends the level. It displays a lot of text, with "GG," "FusionX by Omega," and "For Manix648, Dorami and Cutiekitty's CC's!"
- The first coin is located at a fake in the first robot section.
- The second coin is located at an auto ship sequence after the beginning of the drop.
- The third coin can be reached by jumping at the auto cube part with the text "Ready?"
- This level is a remake of Fusion by Manix648.
- The level is also for Manix648's creator contest.