There are only two achievements linked to the difficulty played. The only difference I found between difficulties is the time you're given per level and the lives you start with.

 
• PRO GAMER
  Complete all basic maps on PRO level

Finish the DUST, MAZE, ROCK, RUIN, and MINE levels in Pro difficulty.

 
• PRO SURVIVOR
  SURVIVAL levels completed on PRO level

Survival unlocks after finishing the five campaign level sets. Finish the 70 levels Survival in Pro difficulty for this achievement.


There are five sets of levels in the campaign, each with 12 levels.
There are six achievements per set: one unlocks for completing the set, and the other five are for completing the set within certain limits. These limits are:

• without losing a level
  
• within a number of moves
  
• within a travel distance
  
• within a time limit
  
• collecting all coins (AND avoiding time bonuses as they deduct points)

My videos below have no problem going under all the limits. I hit ~70% of the move and ~80-90% of the distance limits.


The limits for the DUST levels are as follows:

• 400 moves
  
• 1000 distance
  
• 5 minutes

The limits for the MAZE levels are as follows:

• 550 moves
  
• 1500 distance
  
• 8 minutes

The limits for the ROCK levels are as follows:

• 650 moves
  
• 1600 distance
  
• 10 minutes

The limits for the RUIN levels are as follows:

• 650 moves
  
• 1900 distance
  
• 12 minutes

The limits for the MINE levels are as follows:

• 600 moves
  
• 1500 distance
  
• 10 minutes

Survival mode unlocks after completing the 60 campaign levels. Instead of 5 sets of 12 levels each like in the Camapign, Survival dumps all 60 levels into a single gauntlet with a new level after every 6th level, making a total of 70 levels.

The limits are as follows:

• 2800 moves
  
• 7700 distance
  
• 40 minutes

The limits are a little stricter compared to the campaign, but my videos still fall well below the requirements.

 
• SEASON1 Completed
  Complete all maps in SEASON1

This achievement does not work in the current version (v1.72.0) of the game.
However, it can be unlocked by rolling back to an older version (v1.11.07) of the game. This can be done with:

-app 535000 -depot 535001 -manifest 7920443212238876822

Use DepotDownloader[github.com] to download the files. The Steam Client skips downloading a couple of 0 byte files which renders the game unbootable.

The achievement itself is simple enough, just complete the four sets of five levels on any difficulty for the achievement.

This is a playlist with solutions for all 100 levels in the game.
https://www.youtube.com/playlist?list=PLgQ2X4jgpww1f3I1BZ1DOOboPGjmtGey9

This video only contains the 10 new levels. Use the videos above for the other 60.

Completing these 10 levels aren't required for any achievements, but they're included anyway for completion's sake.