Here is the full list of all 20 PowerSlave Exhumed achievements.
Acquire a weapon boost powerup
Get the good ending
Get the bad ending
Find a team doll
Find all 31 team dolls
Acquire the Sandals of Ikumptet
Acquire Sobek's Mask
Acquire the Shawl of Isis
Acquire the Protective Anklets
Acquire the Kilmaat Scepter
Acquire the Horus Feather
Defeat Set
Defeat Selkis
Defeat the Kilmaat Queen
Complete the game on Hard difficulty
Complete the game on Pharaoh difficulty
Complete the game on any difficulty without collecting any ankhs
Kill an enemy without using any weapons
Kill the Lava Mantis with just the machete
Collect all 5 health ankhs