Before we get into the guide, if you haven't already I really suggest keeping the auto-save function to 1-minute intervals as this game crashed more than any game I've witnessed over ten years. I've also found that the money grind you'll need for some of these achievements is easier to achieve if a more cramped space, so hoarding money and buying all the outer layers of the property until later feels like a more efficient method.

There are 31 achievements in total and no hidden achievements, although the wording on some of these achievements is so vague they might as well be hidden. Let's get into this with the impossible-to-miss achievements.

Complete the tutorial. The tutorial is forced on as far as I could tell you so you can't miss this.

Choose your first contract. The game should prompt you your first contract within the first 5-15-ish minutes depending on which game speed you prefer playing by.

Finish 10 Contracts and Accept 10 Devil Contracts respectively. You can tell if a prompt is a contract as the word will be used in the description. Devil contracts can be determined if the person has devil horns. Normal contracts usually require you to build specific buildings whereas devil contracts involve creating breakdowns that'll need to be fixed. Having plenty of repair buildings can make devil contracts a complete non-issue. They can also bring in visitors that will start with a negative trait.

Have a VIP show up in your park. There is I believe a 0.01% chance any visitor will be a VIP when entering the park. Eventually level 3 upgrades for some stations allow you to increase the odds by another 0.01%.

Unlock your first park tile and Unlock all park tiles respectively. Achieved by unlocking your first tile and eventually all the tiles respectively. Use the path creation tool to access the tile buying feature. You will need about $50,000,000 to unlock all tiles on a map. I recommend getting the $20M achievement 'Wealthy' before buying all plots.

Unlock 10 research nodes. Research buildings generate research points to buy these nodes. There's about 100 nodes in total.

Unlock every building research node. Unlock every node on the 'Unlocks' portion of research. There are 33 nodes in total.

Have all transportation methods upgraded to maximum. These are located on the 'Park Improvements' section. There are three modes of transportation: parking, buses and trains. There are 12 nodes in total.

Unlock very improvement research nodes. These nodes refer to all the nodes in the 'Park Improvements' section that don't involve transportation. There are 26 nodes in total.

Place 5 research buildings. By the time I got all the research I needed I had placed at least 8 already in my park.

Upgrade a store/food or drink/entertainment hall to level 3. This is guaranteed to occur to whatever stores and halls are placed directly at the entrance first. Entertainment halls have a much higher requirement to level up though so they will take longer. Note that ride halls do not have upgrades.

Reach attractivity milestone level 5 and 10. The attraction milestones are achieved by adding decor to decoration halls and ride stalls. Luckily the game gives you at least three blueprints minimum for all decor stalls and at least five for every coaster and ride stall. You will need 17 ride stalls to complete the 'Variety' achievement and decorating all of them with a pre-made blueprint will bring you to rank 10.

Reach visitor amount milestone level 5 and 10. The research nodes are exclusively how you bring in more customers to your park. You will achieve both of these achievements before you've unlocked every node for the parking lot, bus and train.

Reach demand milestone level 5 and 10. Demand milestones are generated overtime, you can actually leave the game on and get to ten demand eventually, but the more you have in the park the faster it generates.

Reach demand level 10 on the desert/apocalypse/arctic environment. Each map requires you to reach level 10 demand on it. I recommend doing the map you find aesthetically pleasing the most last and achieving demand 10 on the other two first as the maps have difference in difficulty. Demand is most likely the first 10 milestone you'll achieve of the three.

(Also note, the Apocalypse Land achievement refers to the Wasteland map.)

Decorate a hall to its maximum attractivity capacity without using a blueprint. When entering a decoration hall there will be a star icon with a numerical counter at the top of the screen. If you don't wish to let your creative urges flow through you, simply spam a small item in any decoration hall until that counter turns yellow.

Have more than 20,000,000 money unspent. I recommend holding off on fully expanding your park until you've gotten this achievement. If you want to leave your game on to grind the money make sure you AFK inside a ride or decoration hall. The contract prompts that appear every-so-often freeze the in-game clock until you select one. The contract prompts will not pop up while inside a hall, but time can still tick along. You may still crash randomly sometimes.

Have a park with one of each ride in it. You need to have all 13 ride stalls available IN ADDITION to having all 4 coaster types in your park. This does not include any entertainment halls/attractions. This achievement took me a bit to figure out.

Here's a great Mine Train rollercoaster that you should absolutely use to get this achievement:
https://gtm.steamproxy.vip/sharedfiles/filedetails/?id=3576147243

Build and verify coaster with over 50 nodes. The term nodes here refers to the amount of times you built a piece of track. This is indicated with a circle placed at the end of the specific track piece. Simply build 50 piece of track, you can have the game automatically connect it to the end of the station regardless of where you're at and the coaster will still run, physics be damned. This achievement will proc once you test run the coaster.

Here is the coaster I made to get this achievement:


Build a custom ride with over 50 parts. This requires you to use the 'Create Your Ride' feature located on the main menu. I have no idea how ride creation works in this game, but I can tell you simply spamming 50 cubes until the achievement procs works.

Follow a visitor with the visitor tool for 1 minute To get this you need to follow a visitor while playing in the default game-speed, the achievement will not proc in any other speed.

Have a park with all tiles unlocked and every space occupied. I recommend this as your final achievement, when you're done with your park simply add pathing to every square you have left remaining in your park.

Hope you managed to achieve this 100% with the help of my guide. This game takes at best 20 hours to fully complete if you really take your time. Some of these achievements were pretty vague in their description with what exactly you were supposed to do, especially with Variety and Crazy Ride. Fortunately the mechanics were simple enough that everything could easily be figured out through trial and error.

Enjoy your newest 100% and maybe check out some of the other games I've made guides for.