Idea and theme for this game are great, and also graphics does work nice. Clown is great; creepy, funny and mild level chaos at the same time.
Reminds a game where Swamp attack meets Plant vs zombies -but theme in this is actually more interesting than in those others, well at least for a horror game.
Collecting, selecting and building are bit clumsy - especially at the same time when enemies are running ahead and not as in waves. Prep/battle phasing could be a good test work next.
Player character could be firing at enemies too, so it could be a moving unit against passing trough enemies - being some sort of backup also behind the lines at the same time.
Enemies could had appearing hp bar above them when damaged.
I had no idea how recruitable behave in battle ground, so it were all kind of like "treat or trick"- learning in this defense line creation game.