A few ideas I thought of since the existing aliens are all some kind of verb. I figured these could help round out combat a bit more and make it more tactical. Number one, chargers. Capable of running quickly in straight lines, they do damage based on how fast they go using the collision model. Obvi...

I am having a blast with the tank, and the car is also fun but the benefits to these start to drop off with sufficiently advanced power armor. Not saying that its a bad thing, power armor is great. But maybe there could be an advanced tank or something that allows for some customization? Like shield...