The Dink Network

Is it possible to complete Initiation without killing anything except the boss? From what I've attempted so far, I figure it's almost possible, but for the screenlock on level 6. I could be wrong, of course, as my test run stalled at the dancing game, due to a rubbish PC. Is there a way of getting to level 4 without killing anything at all?

It is possible to complete Initiation (Ending 3) without killing the boss, but I think you do need to kill the pillbugs on the Level 6 screenlock.

There is a 'trick' to get unlimited bombs, and that helps quite a bit.