Nobody does things around here.

Nobody makes awesome games.

OK, let's ALL stop now.

Nobody wants to.

The game is far too rewarding for sniping, and far too punishing for getting in between enemies.

The only safe way to get through enemies is, really, hiding in a corner, and greeting any ninja that jumps at you with a blast in the face. Slightly tentative after some time.

I got to the second boss on easy - though, really, the difficulty doesn't make that much of a difference. You either know how to prevent getting hurt, or not. If you don't, getting in a giant pit full of white ninjas - like the inavoidable one before the second boss - will almost always get you killed.

Before that white ninja spawning pool, I barely got hurt. And you can barely get hurt if you know how to avoid every danger in every room. A lot of learning through death :D

My tip: Make the difficulty modes differ more. Maybe throw in unexpected enemies on higher difficulties, or make the enemies faster / smarter / stronger. The health doesn't count that much (at least between normal and easy).

Ps. White ninjas turn black after death.