Here is the full list of all 34 Demonic Episode achievements.
Pick up 10 batteries.
Pick up 50 batteries.
Heal a player 10 times.
Heal a player 50 times.
Unlock a door 20 times.
Unlock a door 50 times
Unlock a door 120 times.
Light 30 candles.
Light 80 candles.
Light 180 candles.
Find 10 puzzle clues.
Find 50 puzzle clues.
Find 100 puzzle clues.
Banish 30 demons with your videolight.
Banish 80 demons with your videolight.
Banish 190 demons with your videolight.
Sacrifice a demon minion 5 times at the ritual place.
Sacrifice a demon minion 20 times at the ritual place.
Sacrifice a demon minion 50 times at the ritual place.
Decide 10 times for the right ritual place.
Decide 25 times for the right ritual place.
Decide 60 times for the right ritual place.
Banish the demon back to hell 10 times.
Banish the demon back to hell 40 times.
Banish the demon back to hell 100 times.