To preface: Buy this game on a discount if you want or if you're a big fan of Sylas (like I am), the game's honestly not worth the $30 price point. If there was a neutral option for steam reviews, I would've chosen it.

It took me about 11 hours to 100% the entire game, and I only had to backtrack for the collectible achievements (the silverwings to be specific). From start to finish, I was missing 7 achievements, the most notable ones I was missing were the Nocturne boss fight and the silverwings.

Overall, it was a decent experience to get 100% achievements, although some of those damned silverwings were annoying to get.

6.5/10