Great idea of yours -- this was a hoot to play!
The chain-reaction demolition puzzles were fun. Wrecking enemies from a distance was also fun. Putting the two together made a clever and satisfying way of kicking down the door. The audio felt great, too -- a two-enemy explosion sounded so awesome that it was worth the effort, and the music was catchy. I really like the occasional rapid-pace song, especially if the stage was packed with more hazards than normal.
I'll admit the story was a bit patchy, but the game was fun, no doubt. I might have abused that spawn-block technique, especially when sizing up the force-field puzzles. But now I can replay this and try to survive the onslaught without using that trick (especially for the last boss.) For most stages, I wasn't worried because I could outrun anybody, but when the field got crowded with foes or walls, then things got tense.
The most interesting part was using the jellies as the warp out. It didn't matter how many enemies I had chasing me so long as I could run into the explosion and grab that last one. That felt kind of cool, literally snatching victory from the jaws of defeat. (At least once, I had a jelly on the same square as a beetle, and I still grabbed a win. Un-freaking-touchable.)
Overall, it was puzzling, clever, fast-paced, and explosive. Very cool!