1. Bear wereform.
Werestudent-undergraduate => "Werebear College Student" (otherwise easy to Compel/Invoke)
Life is not a game => phrased clearly enough, this one works
I want to be a human again => easy to Compel, almost impossible to Invoke for an advantage - maybe "Grasping Towards My Humanity"
Life must be precise as clock => could be tightened, but works => might be better as "Control Freak" or "Precise as Clockwork"
Riddles make my mind sane => could be rephrased as "Riddles Bring Me Peace" or "Riddles Relax Me"
Big claws - big resposability = > misspelled, but clear enough
Skin of the beast - mind of the beast => phrased clearly enough, this one works
2. Pure Mortal with demon-copilot
Collector with demon in head => Demonically Possessed Collector
Hard childhood => phrased clearly enough, this one works
I do not like rejects => phrased clearly enough, this one works
All is accessible under pressure => could be more clear, such as "The Crucible Reveals" or "Trial by Pressure"
Collecting is a serious business => phrased clearly enough, but somewhat bland
My left hand is not mine realy => phrased clearly enough, this one is great, but it could be better phrased as "Demonic Left Hand" or "[insert demon name]'s Left Hand."
3. Erlking Knightess
Huntress of the Wild Hunt => phrased clearly enough, this one works, though it could be "Veteran of the Wild Hunt" if she is not attached in a permanent capacity
I was sold before i was born => sounds nice, but I the context needs clarification... maybe "Sold to [insert name] Before I Was Born" to indicate a relationship to something specific, or "My Allegiance is Not My Own" to indicate a more chronic tendency to end up in obligations which seem like slavery
People are like beasts => phrased clearly enough, this one works
Chosen by the Bow => phrased clearly enough, though this one seems hard to Compel for any disadvantage, except for maybe limiting the player's willingness to use non-bow solutions to things.
It is not done yet => phrased clearly enough, this one works
I do not wanna be a plaything => phrased clearly enough, this one works
Survival is a harsh choices => I'd rephrase this to "Survival Requires Harsh Choices" or "Survival Always Costs Something"