Here is the full list of all 20 The Nightfall trophies - there are 20 bronze.
Fire all 10 rockets
Let all 6 eggs explode
Eat the pizza
Take the pizza out of the oven burnt
Drink up all 26 soda cans
Turn on the radio, C64, Atari 2600 and tape deck at the same time
Finish all 15 rounds of Simon
Trigger the pendulum 20 times
Trigger the coffee maker 10 times
Trigger the vibrator 25 times
Start all 14 demos once
Finish day 10
Finish day 15
Finish day 20
Get 10000 points in Pheenyx
Get 25000 points in Pheenyx
Get 50000 points in Pheenyx
Get 5000 points in Fragman
Get 10000 points in Fragman
Get 20000 points in Fragman