Played it, got 20 of 41 parts and over 1000 dudes.
The idea is cool, and it was fun at first, while I was getting more dudes and becoming able to take on tougher enemies, but eventually it got boring. Cause while thee are different enemy types that require different tactics(e.g: attack them from behind while thye're not shooting, etc.) aiming is rather clunky, cause it forces all the dudes to move towards the crosshair, and the rate at which you throw them is quite low, so it's always easier to just order all of your dudes to attack the enemy hoping that they mange to overpower it before it counterattacks.
Also, they tend to get stuck in narrow passages and on corners.
Also, when I got to around 1000 dudes, my fps dropped to 15. Dismissing them only increased it to 20 when they weren't in the viewport.