I understand there has to be 5000 minos killed in total, so just sum them up in one variable, try this:
To make sure, i'd set it to kill 5500 minos, because bbot will count every mino that you were suppose to attack, even if someone else killed it.
Code:
0 {checktask}
MinoKills:=Creatures.TaskKilled(Minotaur)
mk2:=Creatures.TaskKilled(Minotaur Mage)
mk3:=Creatures.TaskKilled(Minotaur Guard)
mk4:=Creatures.TaskKilled(Minotaur Archer)
VarAdd(MinoKills, !mk2)
VarAdd(MinoKills, !mk3)
VarAdd(MinoKills, !mk4)
!MinoKills>=5000 [stay]
CaveBot.GoLabel(Leave)
exit()
{stay}
CaveBot.GoLabel(Hunt)
exit()
To make sure, i'd set it to kill 5500 minos, because bbot will count every mino that you were suppose to attack, even if someone else killed it.