[I was just about to post about the miner glitch, but kaywhyn got in ahead of me.]
Since I'm posting here, I may as well continue the above conversation about Coward 15. I was going to reply again after solving the level so that I could argue from a position of strength, but that hasn't happened yet. The current version of the level is a ridiculous out-of-place difficulty spike, harder even than anything in rank 3, and I absolutely don't believe Dodochacalo would have wanted that. Yes, I know you are trying to enforce the solution from his video, but I don't think he was strict about that being the only solution -- nearly all levels in the first two ranks have a variety of solutions, as is appropriate for the easier ranks.
Furthermore, the level is unforgiving because of an extremely tight timer, a type of level you yourself have said you don't like.
Please be reasonable about this level. Having such a nasty difficulty spike so early really hurts the pack, which is a huge shame when it's otherwise such an excellent pack to recommend to new players.