So i made a folder called "armedbyapoc" and a notepad text document named "armedbyapoc.cs" and i saved this inside it
using System;using System.Collections.Generic;
using System.Linq;
using Styx;
using Styx.CommonBot;
using Styx.CommonBot.Routines;
using Styx.Helpers;
using Styx.TreeSharp;
using Styx.WoWInternals;
using Styx.WoWInternals.WoWObjects;
using Action = Styx.TreeSharp.Action;
namespace Armed
{
    public class Routine : CombatRoutine
    {
        /// <summary>
        /// The name of this CombatRoutine
        /// </summary>
        /// <value>
        /// The name.
        /// </value>
        public override string Name { get { return "Armed"; } }
        /// <summary>
        /// The <see cref="T:Styx.WoWClass"/> to be used with this routine
        /// </summary>
        /// <value>
        /// The class.
        /// </value>
        public override WoWClass Class { get { return WoWClass.Warrior; } }
        private Composite _combat, _buffs;
        public override Composite CombatBehavior { get { return _combat; } }
        public override Composite PreCombatBuffBehavior { get { return _buffs; } }
        public override Composite CombatBuffBehavior { get { return _buffs; } }
        public override void Initialize()
        {
            _combat = CreateCombat();
            _buffs = CreateBuffs();
        }
        Composite CreateBuffs()
        {
            return Cast("Battle Shout", ret => !StyxWoW.Me.HasAura("Battle Shout"));
        }
        Composite CreateCombat()
        {
            return new PrioritySelector(
                // Interrupt please.
                //Cast("Pummel", ret => StyxWoW.Me.CurrentTarget.IsCasting && StyxWoW.Me.CurrentTarget.CanInterruptCurrentSpellCast),
                Cast("Impending Victory", ret => StyxWoW.Me.HealthPercent <= 90 && StyxWoW.Me.HasAura("Victorious")),
                // Kee SS up if we've got more than 2 mobs to get to killing.
                new Decorator(ret => UnfriendlyUnits.Count() >= 2,
                    CreateAoe()),
                new Decorator(ret => StyxWoW.Me.CurrentTarget.HealthPercent <= 20,
                    CreateExecuteRange()),
                new Decorator(ret => StyxWoW.Me.CurrentTarget.HealthPercent > 20,
                    new PrioritySelector(
                        Cast("Recklessness", ret => StyxWoW.Me.CurrentTarget.IsBoss),
                        Cast("Avatar", ret => StyxWoW.Me.CurrentTarget.IsBoss),
                        Cast("Skull Banner", ret => StyxWoW.Me.CurrentTarget.IsBoss),
                        // Only drop DC if we need to use HS for TFB. This lets us avoid breaking HS as a rage dump, when we don't want it to be one.
                        Cast("Deadly Calm", ret => NeedTasteForBloodDump),
                        Cast("Heroic Strike", ret => NeedHeroicStrikeDump),
                        Cast("Bloodbath", ret => StyxWoW.Me.CurrentTarget.IsBoss),
                        Cast("Berserker Rage", ret => GetSpellCooldown("Colossus Smash").TotalSeconds < 1),
                        Cast("Colossus Smash", ret => !StyxWoW.Me.CurrentTarget.HasAura("Colossus Smash")),
                        Cast("Execute"),
                        Cast("Mortal Strike"),
                        //HeroicLeap(),
                        Cast("Storm Bolt"),
                        Cast("Dragon Roar"),
                        Cast("Overpower"),
                        // Rage dump!
                        Cast("Slam", ret => (StyxWoW.Me.RagePercent >= 60 || StyxWoW.Me.CurrentTarget.HasAura("Colossus Smash")) && StyxWoW.Me.CurrentTarget.HealthPercent > 20),
                        Cast("Battle Shout", ret => StyxWoW.Me.RagePercent < 30),
                        Cast("Heroic Throw"),
                        // Don't use this in execute range, unless we need the heal. Thanks!
                        Cast("Impending Victory", ret => StyxWoW.Me.CurrentTarget.HealthPercent > 20 || StyxWoW.Me.HealthPercent < 50))
                    )
                );
        }
        Composite CreateAoe()
        {
            return new PrioritySelector(
                Cast("Dragon Roar"),
                Cast("Shockwave"),
                Cast("Bladestorm", ret=>UnfriendlyUnits.Count() >= 4),
                Cast("Sweeping Strikes"),
                Cast("Thunder Clap")
                
                );
        }
        Composite CreateExecuteRange()
        {
            return new PrioritySelector(
                // Pop all our CDs. Get ready to truck the mob.
                Cast("Recklessness", ret => StyxWoW.Me.CurrentTarget.IsBoss),
                Cast("Skull Banner", ret => StyxWoW.Me.CurrentTarget.IsBoss),
                Cast("Avatar", ret => StyxWoW.Me.CurrentTarget.IsBoss),
                Cast("Bloodbath", ret => StyxWoW.Me.CurrentTarget.IsBoss),
                Cast("Berserker Rage"),
                new Action(ret => { UseTrinkets(); return RunStatus.Failure; }),
                Cast("Colossus Smash"),
                Cast("Execute"),
                Cast("Mortal Strike"),
                Cast("Overpower"),
                Cast("Storm Bolt"),
                Cast("Dragon Roar"),
                Cast("Slam"),
                Cast("Battle Shout")
                
                );
        }
        Composite HeroicLeap()
        {
            return new Decorator(ret=> StyxWoW.Me.CurrentTarget.HasAura("Colossus Smash") && SpellManager.CanCast("Heroic Leap"),
                new Action(ret=>
                    {
                        var tpos = StyxWoW.Me.CurrentTarget.Location;
                        var trot = StyxWoW.Me.CurrentTarget.Rotation;
                        var leapRight = WoWMathHelper.CalculatePointAtSide(tpos, trot, 5, true);
                        var leapLeft = WoWMathHelper.CalculatePointAtSide(tpos, trot, 5, true);
                        var myPos = StyxWoW.Me.Location;
                        var leftDist = leapLeft.Distance(myPos);
                        var rightDist = leapRight.Distance(myPos);
                        var leapPos = WoWMathHelper.CalculatePointBehind(tpos, trot, 8);
                        if (leftDist > rightDist && leftDist <= 40 && leftDist >= 8)
                            leapPos = leapLeft;
                        else if (rightDist > leftDist && rightDist <= 40 && rightDist >= 8)
                            leapPos = leapLeft;
                        SpellManager.Cast("Heroic Leap");
                        SpellManager.ClickRemoteLocation(leapPos);
                        StyxWoW.Me.CurrentTarget.Face();
                    }));
        }
        void UseTrinkets()
        {
            var firstTrinket = StyxWoW.Me.Inventory.Equipped.Trinket1;
            var secondTrinket = StyxWoW.Me.Inventory.Equipped.Trinket2;
            if(firstTrinket != null && CanUseEquippedItem(firstTrinket))
                firstTrinket.Use();
            if(secondTrinket != null && CanUseEquippedItem(secondTrinket))
                secondTrinket.Use();
        }
        private static bool CanUseEquippedItem(WoWItem item)
        {
            // Check for engineering tinkers!
            string itemSpell = Lua.GetReturnVal<string>("return GetItemSpell(" + item.Entry + ")", 0);
            if (string.IsNullOrEmpty(itemSpell))
                return false;
            return item.Usable && item.Cooldown <= 0;
        }
        IEnumerable<WoWUnit> UnfriendlyUnits
        {
            get { return ObjectManager.GetObjectsOfType<WoWUnit>(true, false).Where(u => !u.IsDead && u.CanSelect && u.Attackable && !u.IsFriendly && u.IsWithinMeleeRange); }
        }
        bool NeedTasteForBloodDump
        {
            get
            {
                var tfb = StyxWoW.Me.GetAuraByName("Taste for Blood");
                if (tfb != null)
                {
                    // If we have more than 3 stacks, pop HS
                    if (tfb.StackCount >= 3)
                        return true;
                    // If it's about to drop, and we have at least 2 stacks, then pop HS.
                    // If we have 1 stack, then a slam is better used here.
                    if (tfb.TimeLeft.TotalSeconds < 1 && tfb.StackCount >= 2)
                        return true;
                }
                return false;
            }
        }
        bool NeedHeroicStrikeDump
        {
            get
            {
                // Flat out, drop HS if we need to.
                if (StyxWoW.Me.RagePercent >= 90)
                    return true;
                return NeedTasteForBloodDump;
            }
        }
        private delegate T Selection<out T>(object context);
        Composite Cast(string spell, Selection<bool> reqs = null)
        {
            return
                new Decorator(
                    ret => ((reqs != null && reqs(ret)) || (reqs == null)) && SpellManager.CanCast(spell),
                    new Action(ret => SpellManager.Cast(spell)));
        }
        public static TimeSpan GetSpellCooldown(string spell)
        {
            SpellFindResults results;
            if (SpellManager.FindSpell(spell, out results))
            {
                if (results.Override != null)
                    return results.Override.CooldownTimeLeft;
                return results.Original.CooldownTimeLeft;
            }
            return TimeSpan.MaxValue;
        }
    }
}
After that i put that folder in routines. It is automatically using singular without giving me any option to switch.