- Estimated achievement difficulty: 6/10 [Achievement Difficulty Rating]
- Offline: 47 
- Online: 0
- Approximate amount of time to 1000: 12-15+ hours [Estimated Time to 100%]
- Minimum number of playthroughs needed: 1
- Missable achievements: None [level select and free roam]
- Does difficulty affect achievements: No difficulty option
- Unobtainable/glitched achievements: None
- Extra equipment needed: None
Welcome to Yooka Laylee and the Impossible Lair, the sequel to Yooka Laylee, and another game developed by former Rare employees, which is meant to be a spiritual successor to Banjo Kazooie. The format of Impossible Lair is much different from the original game. This game takes place in a 3D puzzle-filled overworld reminiscent of Banjo Kazooie, and the levels are 2D side scrollers very similar to the Donkey Kong Country series. The gameplay is tight, and the game is fun and interesting. The achievements are largely pretty simple and straightforward with the exception of actually beating the game. That will be the hardest part for most people. Let's get started.
This game has a unique format: right from the start of the game, the final level and boss fight (the Impossible Lair) are available to attempt whenever you want and as many times as you want. It is a gauntlet of platforming challenges and boss fights that is very difficult. To improve your chances of survival, you can play the chapters of the game located in the overworld to save bees, which act as hits you can take during your attempt to complete the Impossible Lair.
To unlock all of this game's achievements, you'll need to complete all 20 chapters, with each chapter having a normal and altered version of it, for a total of 40 levels you'll need to beat. Each level ends with rescuing a bee, so you'll rescue 40 of the 48 bees from just completing the levels. The remaining 8 bees are hidden in the overworld. Refer to the guide below for locating them all.
The other main thing to do when completing all 40 levels is to collect the five hidden T.W.I.T. coins in each one. Some are obvious, but many are very well hidden. I highly recommend using a guide as you go because you will assuredly miss some, and that will require you to play through the entire level over again to get them. These T.W.I.T. coins serve a purpose beyond being collectibles: you'll need to give them to Trowzer to lower his paywalls in order to access all of the levels in the game. You'll need 101 T.W.I.T. coins to gain access to every area in the overworld so you can access every chapter. The remaining 99 T.W.I.T. coins will get you a fourth tonic slot.
So play through all of the chapters and focus on getting all of the T.W.I.T. coins as you go. I highly recommend not worrying about collecting quills much. It'll result in many unnecessary deaths and frustration, and the method for grinding them out at the end is much faster and more efficient anyway. Between each chapter, keep an eye out for tonics in the overworld. Equipping them can help or hinder your gameplay. Again, don't worry too much about quills at this point. Just focus on T.W.I.T. coins and beating each level.
After you've completed all 40 levels and collected all 200 T.W.I.T. coins, it's time to mop up the overworld. There are 8 more bees to find in the overworld and 61 tonics to collect. Note that there are 62 available tonics, but only 61 are available in the overworld, and those are the only ones required for the related achievements. The guide below has all of the bee and tonic locations.
After completing all chapters, collecting all T.W.I.T. coins, rescuing all bees, and collecting all tonics, you'll definitely need more quills in order to be able to purchase them all. The Tonic Boom! (40G) achievement solution has a great method for quickly farming quills. Once you've got enough, purchase them all to finish up all of the miscellaneous achievements.
The last remaining thing to do is to actually beat the Impossible Lair to beat the game. This is by far the hardest part of the game, and even with all 48 bees is quite a challenge. There are no checkpoints, so a death means starting the entire thing over again. A successful run takes a minimum of 20-30 minutes, but expect to require multiple attempts to learn the layout, the boss patterns, etc. The guide has more tips below. Once you conquer the Impossible Lair, that should wrap up your completion.
Yooka Laylee and the Impossible Lair is a fantastic sequel and is a great game with a classic Rare feel to it. It's charming, smooth, has good depth, and is fun to play. The challenge in beating the Impossible Lair may prevent quite a few people from completing this game, but with enough practice and luck it should be attainable.