Sanctum 2: 100% Achievement Guide: Sanctum 2

There are currently 50 achievements available for Sanctum 2 but 19 of them require you to have the following 4 DLCs. Recommends to get them while they are on sales.
https://store.steampowered.com/app/237030/Sanctum_2_Road_to_Elysion/
https://store.steampowered.com/app/237050/Sanctum_2_Ruins_of_Brightholme
https://store.steampowered.com/app/237070/Sanctum_2_The_Pursuit/
https://store.steampowered.com/app/237090/Sanctum_2_The_Last_Stand/

The most challenging parts in 100% Sanctum 2 is to complete all maps with 5 Feats. Some XP grinding to unlock a better weapons, towers, and perks to boost our damage output would make this part easier. Fortunately, it is possible to complete a few early maps with 5 Feats relatively easy using limited weapons and towers but more effort is expected. I have strategy and blueprints for both beginner and veteran on the early maps.

The remaining achievements are a walk in the park with some exception that involves platforming, mini-games, and secret areas for us to explore. I will link YouTube videos where necessary to help you find the right path.

You may play on Easy mode if you want to unlock the maps faster. The XP gain is the identical to Normal mode, but enemies have 50% HP and move slower. IMPORTANT!! Failing to clear a map still reward XP, so do not quit prematurely when you are losing the battle.

Regarding graphics setting, although this game is quite old but it feels choppy with my RTX4060Ti. If you had the same issue, try playing at native resolution but at a lowered quality. Alright, that is enough of introduction. Let’s start hunting our achievements.

Coffee Stained: This is a viral achievement
Co-op with someone who already obtained the achievement. If a Rank 50 player joins the game, there is a high chance you will get it.

Team Player: Complete one map with 5 Feats of Strength enabled in Co-op
It is easier to start your own game and wait for (or invites) someone to join. You may change your game privacy to Public while attempting 5 Feats on any maps to increase your chance of getting this achievement.

Final Destination: Complete The End in a party of four
The End is the last map of the base game which consists of only one ~9 minutes long wave with multiple bosses. You may build the maze first but do not start the wave until the party is full. Achievable on Easy and Normal mode.

These achievements are the ones that you will get while playing the game normally. No extra effort required.

These achievements are related to Easter Eggs in the game.
*This section may contains minor spoilers

Lab Rat: Find the secret area on Bio Lab.

Dark Secrets: Find the secret area on Abandoned Lab.

Loekrise Kingdom: Find the secret area on Outpost.

Game in a game: Complete a game in a game.
Six Pack: Complete six Game in a Games.
The following video shows the location and gameplay of all 6 mini games.
https://www.youtube.com/watch?v=fl60pcUgvH0

Originally posted by Sanctum Fandom Wiki:

1. SNAKE!
Location: 1-2: Park
Objective: Get 42 points.
How to Play: Use the up, down, left, and right arrow keys to move the snake. Touch a block to increase the length of the snake. Each block is worth 1 point. Colliding with the walls of the game or with the body of the snake will result in a game over.

2. Shmups Sucks!
Location: 2-1: Construction Site
Objective: Get 400 points.
How to Play: Shmups Sucks is a very basic ‘shmup’ (shoot-em-up). Arrow keys control your spaceship, and the Use key fires bullets. Enemies stream down from the top, kill enough of them to obtain the required score. Note: You can wrap around the screen – So an easy way to win is to go constantly left or right and fire (Use key; default F).

3.Box Pusher!
Location: 2-3: Cliff Lodge
Objective: Complete all puzzles.
How to Play: Black indicates empty space. Use the arrow keys to move the green box around, which is your character. The white box is the goal of each level, reach it to progress to the next level. Complete all levels to win. Brown boxes can be pushed by the green box. Two or more brown boxes cannot be both pushed at the same time. Red boxes cannot be moved. Pushing a brown box into a blue box destroys them both. Use brown boxes to get rid of blue boxes.

4. Take out
Location: 3-1: Train Station
Objective: Destroy every block.
How to Play: Move the bottom platform by using the left and right arrow keys. Bounce the ball up to hit the blocks. Blocks are destroyed when the ball bounces off of them. Failing to catch the ball on its way down with the platform will result in a game over.

5. Pung!
Location: 3-3: Roadworks
Objective: Defeat the AI opponent.
How to Play:
Pung! has the same format as the popular classic video game, Pong. Your paddle is on the left, the AI’s is on the right. Use the arrow keys to move your paddle up and down. First to 10 goals wins.
The ball will get faster and faster as it is hit more. Hitting the ball with the end of your paddle will increase its speed more than hitting it with the centre.
This is one of the more challenging games, and may require several (or more) tries to complete.

6. Loak Poacher!
Location: 4-1: The Depths
Objective: “Pay off the debt”.
How to Play: This game is either broken or extremely hard; Just keep letting the days tick over (by moving to different locations) and the debit mount up until it becomes a big negative number (probably due to a programming oversight), then buy and sell one thing to win the game (it appears the victory condition is: [cash] – [debit] > 0, and is checked after each sale).

These achievements involved completing a specific objective in the game.

These achievements are rewarded for completing the maps and area with 5 Feats enabled. Use Ctrl+F & type the map name into the search bar to jump directly to the map.