At first when I first played I didn't have much clue as to how to set up my deck, but once I learned to stack up damage amplificators on held weapons, it became a cakewalk. I observed that if you kill enemies fast enough, you can basically keep killing them indefinitely until you get tired of spawncamping robotic eyeballs for hours. 

As a testament to successfully figuring things out, I got 3rd on the leaderboard with a sword build (The greatsword seems to swing for the longest time and not get you in harm's way unlike the Spear), so now I'm free to try out other builds. Having so many lives actually made me have to stand still and wait to get slain by the robots since I had so much reserve lives.