Oh, nevermind. By "halfway" I should have said "all the way back to the very first checkpoint". It's not even that my data was lost, the game literally pulled my line all the way back like it was in super-rewind.
Wonderful game-breaking glitch. Got pretty far, and then a bug dragged my line back like halfway, and now that's where the checkpoint is. Screw this game, I'm not going through all that again.
Boy, the hard badge was brutal, but I got it. I used pldl's advice above on which ones to skip, but I was able to do 70 and 78, so I avoided 30 and 43.
As others have said, the poor control makes this game really hard to enjoy. When you get killed, it shouldn't be because you literally can't control your fish to get out of harm's way.
Not a huge fan of "upgrade" games that require you to grind the first few levels over and over and over and over just to be able to continue. Game gets way too hard way too fast.
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