This post is Walkthrough to the game Untrusted
The game introduction is available here: Awesome geek game Untrusted

Level 1: cellBlockA

Well, you are trapped in a box. And you need to move yourself to the exit (blue squre).

1. Before you can do anything, you need to pick the computer first, then you will be access to the source code interface.
2. Once you got the computer, you can figure out the code that generates the walls.
3. Remove the code that generate the wall! And press Ctrl+5 to apply it.

Level 2: theLongWayOut

Well, you have learn the trick from Level 1, but it doesn’t work anylonger this time. You need to figure out a new apporach.

1. Don’t try to find a path in the maze, there is no such solution.
2. You cannot change the maze created, but you can do something to it before it is deployed.
3. You have learn how to create it for specific size. Why not create another smaller one that doesn’t trouble you?!
4. A maze with size (0,0) is not possible, try a more realistic one, such as (3, 3) or (4, 4).
5. Exit is blocked completely. Do think about to break the wall, that is impossible.
6. Who said there can be only 1 exit per level?!
7. Create a new exit at a different location! You can learn the code form existing one.

Level 3: validationEngaged

Well, again, validateLevel is introduced, which prevents you to replay the old tricks. So you cannot create or remove objects on the fly this time.

1. Since you cannot create or remove objects this time, but you still can move objects.
2. Move one of the wall away to make a gap between the wall.

Level 4: multiplicity

You cannot move wall this time, what will you do?

1. Well, this is just a mindset trap. Forget about moving stuff aroud.
2. There is no validateLevel in this level.
3. What you did in level 2.
4. Just create a exit in the box.

Level 5: minesweeper

Remember the favous game in Windows? Try it here.

1. The issue here is that the mine cannot be distinguished.
2. Mark the mine with a color other than red.
3. You can change block block color by call setSquareColor.

Level 6: drones101

A killing drone? Keep away from it.

1. Well, check moveToward, the logic is actually very dumb.
2. It always, move up and down if the x offset is larger than y offset.
3. It will not move, it the intented direction is blocked.
5. Move right first, then move down when you at the same col as the drone and block. Then move right, the drone will not follow you.

Level 7: colors

A phone to make call? Great idea!

1. Pick up the phone, then press q
2. The callback will be executed everytime you pressed q
3. Rotate your color in the callback

Level 8: intoTheWoods

Go across the forest from the left to the right!
In this level, there is very little code that you can change!

1. Press q
2. The only code you can change is the callback function name
3. All the functions that you can call are in the functionList
4. Generate a new forest, when you press q
6. Move right as far as you can; Once you are blocked, press q to generate a new forest, the move.
7. Repeat move and generate forest untill you reach the exit.

Level 9: fordingTheRiver

Well, a self driven raft, the raft comes to pick you up.
BTW, I really love the BG music of this level.

1. The raft direction is stored in variable raftDirection.
2. Change the raftDirection to up, will make the raft move up each turn.
3. Find a chance to override the value of raftDirection.
4. Write a function that registerd as phone call back with API setPhoneCallback
6. Go to the raft, after boarding the raft press q to execute callback, then move up.

Level 10: ambush

Well, this time, there are a dozen of drones are on your way. You need to figure out a possible to get rid of them as fast as you can.

1. Don’t try to run away as what you did in Level 6. It is a different scenario.
2. Try to change the drone behavior.
3. To apply the same logic to 3 kinds of drones might not be a good idea.
4. Move attak drones away from the row you’re in.
5. Move the Defence Drones away from the row you’re in.
6. Ask Reinforcement Drones to stay at the place.

Level 11: robot

This time, there is very little thing about you. It is about the robot.

1. “Hit and turn” should be smart enough for the puzzle.
2. Move forward, when hit something, turn 90 deg.
3. Use me.canMove to test the hit.
4. Since there just 2 states, a boolean should be enough to represent the state.

Level 12: robotNav

Well this time, it goes a little complicate.

1. “Hit and turn” won’t work here.
2. Path seeking algorithm is way too complicate for this puzzle.
3. Robot should be able to be “programmed”.
4. An instruction system should be enough for the puzzle.
5. Preset the instruction to the robot, and ask robot to execute it step by step.

Level 13: robotMaze

Well, Well, Well, it upgraded again. More intelligence is needed.

1. Maze is randomly generated, so fixed instruction sequence won’t work any longer.
2. Again, Path seeking algorithm is way too complicate for this puzzle.
3. Don’t waste your intelligence.
4. A lot of robot can be “controlled” remotely.
5. Try to teach the robot how to move by your character’s movement.
7. The robot move down when you’re in last row; the robot move up when you’re in the last 3rd row; the robot try to move to your col when you’re in the last 2nd row.
8. Move into last 2nd row, and the move to most left. Move left and right to control robot move horizontally. Move to last 3rd row or last row when you need to tell robot move up and down.
9. Stay in last row and last 3rd row, and press ‘r’ will move robot up and down continuously.

Level 14: crispsContest

Again another maze!

1. The maze is unsolvable, don’t try to solve it.
2. Divide the maze into 5 regions, top left 2 rooms, top right 2 rooms, left 1 room, right 1 room, and bottom 2 rooms.
3. You can hold only one key for each color, or the key will be wasted
4. Because of restriction(hint.3), left and right regions are meaningless.
5. Region top left, top right, and bottom, enter and exists direction doesn’t matter.
6. Check carefully, a string in the code isn’t locked.
7. The item will be taken away is editable when you pass greenLock.
8. Computer and phone are important items for your further plan.
9. null or undeclared value causes exception.
10. Exception will break the code execution, which blocks you from passing the door.
11. Try to find something exists, but you don’t have yet.
12. The Algorithm ?

Level 15: exceptionalCrossing

Really a cruel design… Pick how to die? Tricky but interesting!

1. The only thing you can change it the value passed to player.killBy().
2. Try to remember what you encounter in last level.
3. Get some hint from the name of this level.
4. Exception breaks code execution.
5. null is a valid value.
6. Undeclared value causes exception.

Level 16: lasers

Lazer kills different races.

NOTICE You might got killed by lazer when you haven’t actually touched it. The reason is that the line isn’t 100% align with the coord is given. And I think it is a BUG than designed by purpose.

1. Lazer representation and collision detection are separated.
2. Remove the drawing logic won’t solve the issue.
3. Lazer only kills the object with different color than itself.
4. Color the lines with the lazer color.
5. Use the phone to update your color.

Level 17: pointers

This must be the most problematic level in the game!!!!
Since fortune is more important than wisdom in this level!
If you’re lucky enough, you might able to clear the level by entering a randomly picked portal.
Actually when I play this level for 1st time, I passed without dohing any code work.

1. Well, you can do nothing to the layout, and teleporter links.
2. A path seeking algorithm won’t be helpful for this puzzle.
3. Not all the layout is solvable. That’s why you need some fortune!
4. You’ll be killed immediately if the teleporter is linked to a trap.
5. Try to figure out all the safe links, whose 2 end-points are teleporters.
6. Try to visualize the the safe links.
7. Check API document for new available APIs.
8. Use map.getCanvasCoords to figure out the plot coords for teleporters.
9. Draw lines between safe teleporters.
10. Line drawing code can be found in previous level.
12. Restart the level, if the level is obviously not solvable.
13. The puzzle is unsolvable, if there is no link to the room where exit locates
14. The puzzle is unsolvable, if there is no link to the room player is placed.
15. Luck is the key!

Level 18: superDrEvalBros

Great honor to Super Bro.Mario 🏆

1. Jump is kind of misleading word.
2. “Bridge” should be a better solution.
3. To material builds the bridge is not necessarily to be “block”.
4. Create your material.

HINT If you really like to jump:

1. Jump is possible, but not a really good solution, since it introduces races between 2 timers.

Level 19: documentObjectMadness

jQuery!!!!

1. Code isn’t editable at all in this level.
2. Use the arrow keys to navigate the green block.
3. You need to use green block to cover the red block.
4. If you familiar with EverNote Web Clipper, then it should be very easy for you.
5. Press up for 4 times, then right 2 times, and adjust your green block to cover red

Level 20: bossFight

Finally, fight against the BOSS!

1. To clear the level, you need to kill all the bosses to get the Algorithm first.
2. Timer is not available.
3. So before you can do anything, you need the phone to trigger something.
4. Only 1 block is available
5. You can place the only block in the middle of the gap to shelter the bullet for you. With its help, it isn’t that hard to get the phone without being shot.
6. Or You might create a new tile to shelter the bullets for you, the number of new material blocks are not limited.
7. To kill the Boss, you need create your own bullet!
8. If you create your own shelter material, you can make it passable for your bullet.
9. Who said the bullet must be shot from your position?
10. Who said the bullet must fly from bottom to top?
11. Who said you can only shot one bullet per key press?

Level 21: endOfTheLine

It is the End?

1. This isn’t really the last level!
2. The key is map.finalLevel = true;.
3. Press Ctrl+0 to check what is inside.
4. What is in scripts/ folder?
5. Why some blocks are purple, some others are black?
6. Check objects.js, find exit object definition.
7. Comment out if (!game.map.finalLevel) { and }
8. Go to next level!