Alien Hominid HD
12 Achievements
200
4-5h
Xbox 360
Xbox One
Xbox Series
Adult Alien
Complete Game on Medium Difficulty.
15
How to unlock the Adult Alien achievement in Alien Hominid HD - Definitive Guide
ac2565, J2, Da, R, Purge
This is a story related achievement, which will unlock after you have finished the game on the medium difficulty. If you are stuck, please refer to "Expert Alien".