Not sure if I played this correctly but I ended up treating this as a regular TD game. I assume the goal was to be able to deflect the enemies but bypass the defense when it's your turn to play as enemy. To communicate this better some fail condition would help I guess.
I will give it another try today, but here is my first attempt:
Yeah, you want to have a just good enough defense to defend the wave, but be able to defeat it during the attack mode. preserving checkpoints during defense and getting them on attack allows you to get more money. You aren't supposed to make the ultimate defense everytime because if you do that you won't be able to attack it. Thanks for playing!
