Good luck with this! I recorded 19 plays of the game to get a solo win. From memory I relied upon getting a particular weapon that prevented the groups attacking me? Great game, it was my umpossible challenge for 2016.
So i suppose you've earned this nickname : "Kristabelle the Crossbow queen" !
I've also tried to play without the timer, but added with my two previous variants the game is now a little too easy, at least at the start : you've plenty of time to gain new skills & equip yourself ...
However, i'm still trying to "customize" these three cards that are also pretty useless in a solo game (any ideas ?) :