Here is the full list of all 13 Baobabs Mausoleum Ep.1: Ovnifagos Don't Eat Flamingos achievements.
You have completed credits
You finished the game
You got all the statues
Pass the dungeon in time
You have got all the coins
You have passed the Mutant record
You have located the beavers
You have killed Reptochef
you play the game
Speak to all the characters
You have seen all the scenes view
You killed the boss without receiving any damage.
You have overcome the Mutant without receiving damage