Really enjoyed this entry. It's simple enough to play. Good chip tunes. I really loved the art style for this! Reminds me of NewGrounds/early 2000's vector graphics. Encountered a bug at the beginning and end. I enjoyed the idleness and getting to get really powerful stuff. Lifesteal is amazing.
1. At the beginning the help screen overlays while the action is playing in the background. I think if the help screen is up it should pause the game.
2 the Return to Main Menu button didn't work. Had to restart to play again.
Both pretty minor bugs. Great job!