Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
1 Fiend-Type Tuner + 1 or more non-Tuner monsters When this card destroys an opponent's monster by battle and sends it to the Graveyard: You can have this card gain 800 ATK until the end of the Battle Phase, also this card can make a second attack in a row.
--ヘル・ツイン・コップ
--Stygian Sergeants
local s,id=GetID()
function s.initial_effect(c)
	--synchro summon
	Synchro.AddProcedure(c,aux.FilterBoolFunctionEx(Card.IsRace,RACE_FIEND),1,1,Synchro.NonTuner(nil),1,99)
	c:EnableReviveLimit()
	--chain attack
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_O)
	e1:SetCode(EVENT_BATTLE_DESTROYING)
	e1:SetCondition(s.atcon1)
	e1:SetOperation(s.atop1)
	c:RegisterEffect(e1)
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,0))
	e2:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_O)
	e2:SetCode(EVENT_BATTLE_DESTROYING)
	e2:SetCondition(s.atcon2)
	e2:SetOperation(s.atop2)
	c:RegisterEffect(e2)
end
function s.atcon1(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	local bc=c:GetBattleTarget()
	return Duel.IsTurnPlayer(tp) and bc:IsLocation(LOCATION_GRAVE) and bc:IsMonster()
		and c:CanChainAttack() and c:IsStatus(STATUS_OPPO_BATTLE)
end
function s.atop1(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	if not c:IsRelateToEffect(e) or c:IsFacedown() then return end
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_SINGLE)
	e1:SetCode(EFFECT_UPDATE_ATTACK)
	e1:SetValue(800)
	e1:SetReset(RESETS_STANDARD_DISABLE_PHASE_END)
	c:RegisterEffect(e1)
	Duel.ChainAttack()
end
function s.atcon2(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	local bc=c:GetBattleTarget()
	return Duel.IsTurnPlayer(1-tp) and c:IsRelateToBattle() and c:IsStatus(STATUS_OPPO_BATTLE) 
		and bc:IsLocation(LOCATION_GRAVE) and bc:IsMonster()
end
function s.atop2(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	if not c:IsRelateToEffect(e) or c:IsFacedown() then return end
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_SINGLE)
	e1:SetCode(EFFECT_UPDATE_ATTACK)
	e1:SetValue(800)
	e1:SetReset(RESETS_STANDARD_DISABLE_PHASE_END)
	c:RegisterEffect(e1)
end