Sorry to hear you're having so much difficulty. Here's a few tips to help you:
- The monster will spot and take chase from five tiles away if its moving towards the player and the player is not hidden.
- Listen for when the monster hits a wall to know its route (it makes a wall bump sound).
- Hiding (by pressing and holding the up key) is possible only when not spotted by the monster.
- Using headphones, it should be possible to pinpoint the monster's patrol route and wait for an opening to act.
- Staying still decreases the heart rate.