I picked this up not long ago. It's a blast, but I've got a couple questions.
One of the powerups makes what appears to be an orange holographic-y double image behind my ninja. I thought it was a graphical glitch, at first. It does everything my ninja does, so I thought it might be some sort of "helper", but it doesn't seem to be able to hit enemies. What the heck is this thing supposed to do?
I'm also having a lot of trouble in the snowy level early on. When I'm climbing on the side of something, jumping backwards is easy, but getting on top of the thing I'm hanging on is very difficult. Is there a trick to this?