This game does not have a "proper" ending, instead it does something a little different - Wave 11 acts as a "final" stage, and then Wave 12 is a stage that loops forever, essentially acting as a "victory lap" where you keep playing until you lose all your lives. Since this is the end of the game's content, we'll count this as the closest thing to a 1CC.
Also, you can be a jeep or a helicopter in this game. I used the jeep because it's a lot easier, surprisingly. I have been wanting to learn proper strats for the helicopter and may still do so at some point in the future, hopefully.
1CCBBH is my new stream project in which I'm attempting to clear as many arcade games as possible on 1 credit, without continues. I am currently going through a bunch of games I've cleared before, and eventually will be tackling some new games I hadn't gotten a 1CC on yet.