function onKill(cid, target, flags, damage, war)
	if not isMonster(target) or getCreatureMaster(target) == cid then
		return true
	end

	if #getMonstersInRange(positions[1][1], positions[1][2]) == 1 then
		local name, value = getCreatureName(target), math.max(1, getCreatureStorage(cid, storage)) * 2
		if value == 2 ^ rounds then
			local _rewards = rewards[name:lower()].final
			if _rewards then
				local reward = _rewards[math.random(#_rewards)]
				doPlayerAddItem(cid, reward[1], reward[2] or 1)
				local name = getItemInfo(reward[1]).name
				doPlayerSendTextMessage(cid, MESSAGE_STATUS_CONSOLE_BLUE, '[Challenge Room] You have been awarded with ' .. getArticle(name) .. string.char(32) .. name .. ' for the battle.')
			end

			doTeleportThing(cid, positions[2])
			doPlayerSendTextMessage(cid, MESSAGE_STATUS_CONSOLE_BLUE, '[Challenge Room] Congratulations, you have completed all of the rounds of the Challenge Room!')
			doCreatureSetStorage(cid, storage, nil)
			unregisterCreatureEvent(cid, 'challenge_kill')
			unregisterCreatureEvent(cid, 'challenge_death')
		else
			local _rewards = rewards[name:lower()].round
			if _rewards then
				local reward = _rewards[math.random(#_rewards)]
				doPlayerAddItem(cid, reward[1], reward[2])
				doPlayerSendTextMessage(cid, MESSAGE_STATUS_CONSOLE_BLUE, '[Challenge Room] You have been awarded with ' .. reward[2] .. 'x ' .. getItemInfo(reward[1]).name .. ' for current round.')
			end

			local spawn = getArea(positions[4], 3, 3)
			for i = 1, value do
			if delay > 0 then
					addEvent(doCreateMonster, delay, name, spawn[math.random(#spawn)])
				else
					doCreateMonster(name, spawn[math.random(#spawn)])
				end
			end

			if delay > 0 then
				doPlayerSendTextMessage(cid, MESSAGE_STATUS_CONSOLE_BLUE, '[Challenge Room] Congratulations! Next round starts in ' .. delay / 1000 .. ' seconds with ' .. value .. ' monsters.')
			else
				doPlayerSendTextMessage(cid, MESSAGE_STATUS_CONSOLE_BLUE, '[Challenge Room] Congratulations! Next round started with ' .. value .. ' monsters.')
			end

			doCreatureSetStorage(cid, storage, value)
		end

		if refill.hitpoints then
			doCreatureAddHealth(cid, getCreatureMaxHealth(cid))
		end

		if refill.mana then
			doCreatureAddMana(cid, getCreatureMaxMana(cid))
		end
	end

	return true
end

function onPrepareDeath(cid, deathList)
	for _, v in pairs(getMonstersInRange(positions[1][1], positions[1][2])) do
		doRemoveCreature(v)
	end

	doTeleportThing(cid, positions[3])
	doCreatureAddHealth(cid, getCreatureMaxHealth(cid), CONST_ME_MAGIC_BLUE, COLOR_GREEN, true)
	doPlayerSendTextMessage(cid, MESSAGE_STATUS_CONSOLE_BLUE, '[Challenge Room] Defeat! You\'ve lost the battle against monsters.')
	doCreatureSetStorage(cid, storage, nil)
	unregisterCreatureEvent(cid, 'challenge_kill')
	unregisterCreatureEvent(cid, 'challenge_death')
	return false
end