I can't quite tell if the game uses 3D assets at an angle that makes it appear more 2D, or if it's all 2D but made to look 3D. Either way it's a pretty neat style.
The balance of the game feels a bit out of whack though. The turrets despawning felt a bit harsh, and the game got ridiculously easy once I was down to just one coffin and could put all the turrets in one lane.
It's a good foundation though, managing several distinct sections that share resources in a tower defense game is a cool idea.