Here is the full list of all 49 Yomi Alliance achievements.
You completed Chapter 1
You completed your first day
You learned the basics of console commands
Sulijan told you about Nixanti Religion
You performed 100% in Negotiate simulations
You maximized your Enterprise Skill
You maximized your Athletics Skill
You maximized your Armed Combat Skill
You maximized your Conceal Skill
You maximized your Construct Skill
You maximized your Craft Skill
You maximized your Computer Skill
You maximized your Demolitions Skill
You maximized your Engineering Skill
You maximized your Entertain Skill
You maximized your First Aid Skill
You maximized your Forgery Skill
You maximized your Gaming Skill
You maximized your Gymnastics Skill
You maximized your Impersonate Skill
You maximized your Indoctrinate Skill
You maximized your Influence Skill
You maximized your Inquire Skill
You maximized your Investigate Skill
You maximized any Knowledge Skill
You maximized your Medicine Skill
You maximized your Observe Skill
You maximized your Persuade Skill
You maximized your Ranged Combat Skill
You maximized your Repair Skill
You maximized any Science Skill
You maximized your Sleight of Hand Skill
You maximized your Sports Skill
You maximized your Stealth Skill
You maximized your Survival Skill
You maximized your System OPS Skill
You maximized your Tactics Skill
You maximized your Unarmed Combat Skill
You maximized your Astrogation Skill
You maximized your Flight Control Skill
You maximized your Law Skill
You maximized your Retrieve Skill
You maximized your Fraternize Skill
You maximized your Oratory Skill
You maximized your Mediate Skill
You maximized your Command Skill
You maximized your Programming Skill
You maximized your Propulsion Skill
You maximized your Structural Engineering Skill