Wendigo is in my opinion more theme appropriate than werewolves, and I honestly don’t think players should play monsters unless they are playing monsters.
Then you can argue 2nd character sheets or not.
Traditional werwolf:
Loot item: werewolf bite
Passive (always on) +2 to perception.
Triggers, high stress and smell of blood. 1d4 round transformation time. Stays transformed 1d8 hours.
Hard wis check to control.
Active: +4 str, +4dex, +4 con +4 armor. Immune to mind control,
1d4 health regen at beginning of round unless damaged by silver.
All attacks are near, weapon damage +4. Can only use tooth and claw.
All non-werewolves are enemies.
Bite, changes those bitten to werewolves unless successful con save with 1 heart of effort 3 days after bite. Silver elixir grants ultimate effort to save.
GM can decide what stays equipped and not equipped during transformation.
That is how I would make a werewolf if I thought about it for 20 minutes after waking up and no caffeine. Take what you like, what fits and discard and add what you don’t.