I just finished my 2nd playthrough of Tunic and it was a top-tier gaming experience. When I first played the game, last year at launch, I thought it was beautifully crafted, but too demanding of the player on every level. The combat wasn't quite tight enough to support the difficulty of boss fights, and the layers and layers of puzzles made my brain hurt. I got the bad ending and spent a few days exploring the world looking for secrets, but eventually got frustrated and gave up. I knew that my son was going to ask me to play it again somewhere down the line, so I decided to put the game down with some of its secrets left unsolved, figuring I'd push a little farther in the next time I played it.
Well that time finally came, and playing Tunic for a second time was, in my opinion, a better experience than playing it the first. Probably best to just put the rest of the post in spoiler text, since I'll be talking about all kinds of things:
First of all, knowing how the game systems worked made dealing with the combat and exploration a lot easier. I could use the holy cross to get extra money, bombs and upgrade items, ramping up the fox's power curve way faster than the first time I played. I got the shield BEFORE fighting the Siege Engine, and boy howdy did that make that fight easier. I knew roughly which ability cards to use and I wasn't stingy with bombs, since you just get more the more you use them! All of that combined to sand down the edges on the difficulty, making for a pretty smooth experience. Bosses still took a few tries, but nothing got too frustrating and I could focus on looking for secrets in the world.
The biggest aha moment came when I finally understood the principle behind the Golden Path. Once it clicked into place that each page of the manual had a part of the solution, I explained the concept to my son and he got super motivated to try to solve it. We collected the pages and started going over them, trying to figure out where the path segment was on each one. I made a template that I printed out so he could starting filling in the squares as we found the pages. He was even motivated enough to bear with me as I worked through the various fairy puzzles - normally, he wouldn't have the patience for that sort of thing. In the end, there were 4 or 5 pages that we got wrong, either because they didn't quite conform to the expected rules or because some graphic design element confused us (seriously, sometimes it isn't very clear what is or what isn't part of the path). If I had been playing by myself, I might have spent a little longer trying to figure things out before looking things up. But my son only had so much patience and I didn't want this to turn into an ordeal for him.
In the end, we opened the mountain door and got the good ending, and had one of our best shared gaming experiences ever in the process. I'm sure we will be playing Tunic again down the line, and there are definitely a few hidden secrets still left to unearth, but I don't think anything is going to top our 2nd trip through the game.