Here is the full list of all 12 HUMANS CONNECT achievements.
Defeat Inpu with NightWolf
Defeat Inpu with Julia
Defeat The Entity "Alpha"
Use Counter Claw on Inpu 7 Times
Defeat Inpu with NightWolf under 2 Minutes
Block Inpu's Retaliation Once
Knock down Inpu while he's performing Sun Beams
Defeat Inpu with Julia Under 2 Minutes
Negate Inpu's Normal Attacks
Defeat "Alpha" Without Getting Hit
Use both Heal of Anubis and Wrath of Judgement
Defeat "Alpha" under 3 minutes