Here is the full list of all 20 Atari 50: The Anniversary Celebration achievements.
Narrowily land in Lunar Lander after falling at high velocity (VCTR-SCTR)
Listen to all the radio messages (Haunted Houses)
Find and solve the dragon puzzle (Haunted Houses)
Earn a top bounty in Creepy Cabin (Haunted Houses)
Earn a top bounty in Terror Tower (Haunted Houses)
Earn a top bounty in Madness Mansion (Haunted Houses)
Unlock all the haunted locations (Haunted Houses)
Experience all the jump scares (Haunted Houses)
Get a color chain of 15 or more (Neo Breakout)
Beat a level with a shrunken paddle without missing a ball (Neo Breakout)
Crush four shifting blocks into a wall in a single level (Neo Breakout)
Beat a level with the ball in Whammy Speed (Neo Breakout)
Beat the CPU opponent in Battle Breakout (Neo Breakout)
Discover the final secret of the Air Temple (AirWorld)
Visit every room in one playthrough (AirWorld)
Complete Wave 1 without using shields (VCTR-SCTR)
Land two ships in Lunar Lander with one player at max fuel (VCTR-SCTR)
Successfully complete the first bonus stage in Tempest 2000
Earn Holly's admonishment in Cybermorph
Get first place on a Miracle Race in Atari Karts