On my first playthrough, I chose Insanity mode and no tutorial. I got the hang of things pretty quickly. I ended up never using the explosion and got pretty far. The moment I found out I had an explosion, I used it, and that caused me to die. I did wish there was an indicator when I was getting hurt. I would look to the bottom left to find a little of my health had been scratched off and I had no idea what the source was. Pretty great game.