Looney4labs....the answer to your question is "EVERYTHING"....The graphics, the atmosphere,
gameplay, the enemies, the humor, just an amazing game as far as I am concerned. When I can finish a game I am having fun. Plus I just started playing it again last night. I found out that you carry over all your upgrades plus what orbs you have collected. Traveling the 1st 2 levels I found all kinds of orbs I had missed the 1st time around.