Here is the full list of all 45 Plan B from Outer Space: A Bavarian Odyssey achievements.
Remained on earth as a famous actor
Dissected by the FBI
Recaptured the spaceship from the alien hunters
Assumed the form of a soldier
Started a family with Berta
Assumed the form of a boar
Flooded the town
Drowned in the reservoir
Converted the church into an emergency transmitter
Assumed the form of a priest
Assumed the form of an old lady
Used the Gigakill XK-Blaster
Burned up on re-entry into the atmosphere
Returned to the Traxian Empire
Escaped from earth together with the Wolpertinger
Assumed the form of a hippie
Assumed the form of a dog
Escaped from police station
Assumed the form of a cop
Healed an Earthling with your medikit
Returned to Quasar Corp
Used an actor's disguise to send an emergency call
Assumed the form of a famous actor
Converted the internet antenna into a transmitter
Returned to the Union HQ
Abducted by other aliens
Assumed the form of a cow
Lost your equipment
Assumed the form of one of the twins
Assumed the form of a cat
Named the earth for the first time
Eaten by scouts
Shot by Rudolf
Left on earth by the Wolpertinger
Fell into the hands of the conspiracy theorist Hans
You talked Hans into letting you use his transmitter
Fooled the conspiracy theorist Hans and stole his transmitter
Shot at the fair
Assumed the form of a local boozer
Played through every single chapter
Opened a lock without triggering the failsafe
Hacked a system without triggering the failsafe
Distracted Adelheid with a soap opera written especially for her
Knocked out all present in the inn with narcotics.
Bypassed the security measures of the dam in a particularly elegant way