I think this is a really cool idea.
Apollodragon’s/Taloknight’s Survivor should activate earlier and scale with time passed.
0-75: uncharged Slayerbane
76-150: Neko Punch
150-225: 1-kill Bloodshed
225-300: normal Survivor
300-400: Retribution
400+: Bloodfury (I think it does more damage than Retribution, doesn’t it?)