Battle Blox Ideas?

This game essentially was based off of Battle Cats on the mobile device.
I’ve got the core of the game down, being able to buy your noobs and waves of guests. Now I just don’t know what to do. Keep making waves of different guests? I honestly don’t know. Feedback and ideas are appreciated!
https://www.roblox.com/games/4708658394/Battle-Blox-Pre-Alpha

Well, there’s not really a way to “lose” or win right now

Yes, and I’ve thought of it being endless, or you have to destroy each other’s base and you will proceed to the next level.