ATOMINE

At the end of this level, you will have to fight a boss. The boss isn't too difficult, but it can get quite busy with everything going on. There are drone enemies that spawn periodically, trap tiles that will damage you if you walk over them, and spike balls that are spewed out by the boss towers. Only one of the boss towers is vulnerable, so pick it out and blast it full with lead (or rockets.....or lasers.....)

Anyways, I made a video of me beating the boss (as well as the rest of the game). Enjoy!