I recommend starting the game on hard mode because you won’t need to replay it. You may get stuck on some levels, but you must be patient and stick with hard mode. If you don’t play on hard, you'll have to replay them to get the 100% achievement.

The game mostly requires you to memorize what to do to fix the generators, quick thinking, and which tools are appropriate.

For me, Chapter 9 was the toughest; it took me about 3 hours, even though Chapter 12 and 13 were harder. But I don't know what the issue was, It depends on you, your luck, and your skills

• You will UNLOCK this achievement after completing chapter 1
  
  
  Kissing Hazard
  Kiss Zmora
  
  
  1/8

• You just need to press the 'Space' key 4 times or so to UNLOCK this achievement ↓
  
  
  Choking Hazard
  Eat like crazy
  
  
  
• You will UNLOCK this achievement after completing chapter 3 ↓
  
  
  Stabbing Hazard
  Kiss Cutwire 1
  
  
  3/8

• You will UNLOCK this achievement after completing chapter 4
  
  
  Cutting Hazard
  Kiss Cutwire 2
  
  
  4/8

• You will UNLOCK this achievement after completing chapter 6
  
  
  Burn Hazard
  Kiss Nikita
  
  
  5/8

• You will UNLOCK this achievement after completing chapter 9
  
  Electric Hazard
  Receive a kiss
  
  
  6/8

• If these achievements didn't UNLOCK after completing Chapter 13, they seem delayed and don't pop up automatically. You need to go to Credits or the Gallery to UNLOCK them."
  
  
  
  Overtime Hazard
  Beat the game
  
  
  Pain Hazard
  100% Hard Mode
  
  
  8/8

1:16 Kissing Hazard Kiss Zmora



2:50 Choking Hazard Eat like crazy



4:20 Stabbing Hazard Kiss Cutwire 1



5:27 Cutting Hazard Kiss Cutwire 2



7:37 Burn Hazard Kiss Nikita



12:41 *Electric Hazard* Receive a kiss



19:55 Pain Hazard 100% Hard Mode



20:09 Overtime Hazard Beat the game