Here is the full list of all 17 Project Starship achievements.
Kill God In a Boss Rush
Get to level 5 in Hardcore mode
It will never end
Boss rush
God is dead!
Ok, that’s a reference!
This Cthulhu is bigger!
With the Devil
He is waiting for you!
Even death may die!
Die 5 times in a row
Extra life? Extra troubles!
Do not worry, It will be worst!
He has something to say!
Shields! More shields!
Get your P to 10
Kill 100 enemies in a game