- Estimated achievement difficulty: 4/10 [somewhat skill and loot/luck dependent] [Achievement Difficulty Rating]
- Offline: 37 
- Online: 2 
- Approximate amount of time to 1000: 40-50 hours [Estimated Time to 100%]
- Minimum number of playthroughs needed: 1 plus 19 Chaos Chamber runs
- Missable achievements: None [free roam]
- Does difficulty affect achievements: No - can earn all achievements on the easiest difficulty
- Unobtainable/glitched achievements: None
- DLC: Coiled Captors
- Difficulty: 3/10
- Time to 20: 45-60 minutes
- Unobtainable: None
Welcome to Tiny Tina's Wonderlands, a spin-off game from the Borderlands franchise that merges a table-top RPG with the Borderlands gameplay. If you've played a Borderlands game, the gameplay here is identical, with one addition: there is a third-person Overworld for you to explore, and this is how to get to each new area. Within each area of the Overworld, the gameplay and all aspects are virtually identical to Borderlands games, so fans of the series will feel right at home. The achievement list is pretty standard for the series as well, but thankfully there are no achievements tied to any specific class, nor any real combat-specific achievements, so feel free to build your class however you want without worrying about achievements. The achievements will require you to complete the story, all side quests, a bunch of miscellaneous stuff, looting, and then the Chaos Chamber (not as intimidating as it sounds) to wrap things up. Let's get started.
As noted above, there are no achievements tied to class or any combat that your class could impact, so design your character and class however you prefer to play. The tutorial will teach you everything you need to know about the gameplay and the new Overworld.
For the completion, you'll need to complete every side quest, so I highly recommend completing each one as you find new ones (or come to new areas). They'll ensure you're always a high enough level to make progress in the story quests, and doing them now eliminates the need to backtrack through areas you've already played through. A nice addition to this game relative to side quests is that every side quest can be started from the Bounty Board in Brighthoof rather than needing to track down the quest giver in a specific region; the only exception to this is Overworld side quests, which much be initiated there. This is a handy way to make sure you didn't miss any, by just traveling back to Brighthoof and checking for an exclamation mark on your map at the Bounty Board. None of the side quests should pose any problems, and there are no raid bosses in the base game, so it should be clear sailing.
In terms of collecibles, there are a bunch out there (scrolls, marbles, lucky dice, rune puzzles, etc.), but thankfully you barely need to even touch them. All that's required from an achievement perspective is finding one scroll (virtually impossible to miss in the Overworld). While no others are required, I do recommend picking up as many Lucky Dice as you can find. They increase your Loot Luck so you're more likely to find rarer and better loot. Also, each of these collectibles are tied to ingame challenges, and unlike the Borderlands games where the ingame challenges rewarded you with Badass Tokens, in this game the challenges reward you with money and XP, so they'll all help you level up.
Speaking of leveling up, max level is 40 in this game, and assuming you complete all side quests and story quests, you'll assuredly reach level 40 by the time you're done. If you somehow don't, your Chaos Chamber runs will absolutely level you up the last bit you need to reach level 40. So no grinding or New Game+ playthrough required here to reach max level.
At the end of the story, the epilogue mission will introduce you to the Chaos Chamber and will take you on a tutorial run through it. One of your final tasks for this completion is reaching Chaos level 20 in the Chaos Chamber. This will require a decent amount of time and effort, as it'll require 19 playthroughs to level up to level 20. I highly recommend reading through Controlled Chaos (50G) for a complete explanation of this mode, what exactly to do for this achievement, and how to make it as easy as possible.
Once you've done everything above, potentially your last achievement will be buying every inventory upgrade. This will either take dozens of hours of grinding loot, or under an hour of duplicating money/loot with a partner online. Refer to Mule Character (50G) for more information. Lastly, if you still haven't gotten the two simple co-op achievements, they're both quick and easy to mop up.
The first of four DLCs as part of the season pass, Coiled Captors introduces a new mini hub area with a new mini version of the Chaos Chamber. Strangely, this DLC doesn't start with a new quest in your journal and has no objective marker. To start/access this DLC, load into your game and fast travel to the Overworld. Head to the path in the southwest between Snoring Valley and Queen's Gate, which is essentially where you started the game, and you'll find an entrance to a new area, Dreamveil Overlook. Head in, and walk to the center of this new hub, and Vesper will go through some dialogue and walk you through some short objectives. Afterwards, she will mention about going inside a mirror to awaken the old god. This is where the quest ends and you are left to actually play the DLC. Turn around (from the Wheel) and you'll see a floating mirror. Head inside to go through a series of six rooms (five regular and one boss) that function somewhat similar to the Chaos Chamber from the base game.
Note: If you finished the base game achievements with the Chaos Chamber, you may still have the game set to Chaos Level 19. This will make this DLC significantly more difficult. Make sure you go into the Chaos tab of the pause menu and turn Chaos Mode off. This DLC will now be incredibly easy. You'll need to play through the six rooms four times total. The first will unlock Chums, Bested! (10G) and the fourth time will unlock Champion of Tall Fish Tales (10G). Please read through the latter achievement solution to save a huge amount of time. Each run will take approximately 10-15 minutes, and this DLC will be (thankfully) complete before you know it.
Wonderlands is a solid entry in the Borderlands franchise. It retains all of the things that make Borderlands games so enjoyable - the dialogue and voice acting, the looting, the continual references to pop culture and memes, etc. - and adds in some new stuff, such as the Overworld and the Chaos Chamber, to make itself stand out. While a bit shorter than Borderlands games, that isn't necessarily a bad thing. Hopefully you enjoyed your time with this game and congrats on the completion!