LD32 was my 4th ludum dare, and the first I finished a playable game. It was also the first time I had to upload changed code (twice) after compo ended. The problems rendered game unplayable: at first, textures did not load in compiled version (everything looked fine in unity), and then I found out that if you get killed and restart the level, you can’t move (while game requires you to try and fail for a first minute, to figure out what happens).
During LD30 and LD31 I already learned, that I need to plan levels, and having a vague idea what they’ll be is not enough: in LD30 I did not even know what I want to do, in LD31 I had everything planned, but prologue, and I wasted most of the time working on that one part. Yet once again I did not do anything about it. In effect, I had to rush some block-built arena on the last minute, that killed the performance, and I never had time to even try if my game works.
That’s how you fail – by not learning on your own mistakes.

Obligatory entry link.