Surprisingly solid tower defense/ platformer hybrid, once you work out that the towers are stupid and will deliberately try to shoot at things their bullets are too slow to hit, like falling enemies.
Once I realized that, I put "Long" towers on either side of the objective, directly underneath the spots where slimes would fall from the ceiling. Then I started jumping and releasing Long towers to stack them. By the end, I had 6 long towers, 3 covering each drop, firing their bullets straight up into each enemy as they fell. 2 Normal towers on the inside just in case anything slips through, and a third Normal tower I carried around the level with me during the attack wave.
I hated the boss, though. It feels like it belongs in a different game. It uses mechanics the normal game doesn't even have., like Player Health. Don't make me fight a boss. Or let me build towers to fight the boss for me. I didn't come here to do timed jumping puzzles with the keyboard on pangs and penalty of death.
I came here to defend things with towers.