If you feel that one of your bosses is causing problems which is why you're not willing to waste potions fighting him just make use of the Ultimate Force powerup RS Gold. If you are not sure, avoid making use of it since it will not give you any experience for killing. To obtain the highest amount of points and experience possible, players have to take on as many bosses as they can.
There are also bosses including Count Draynor, King Roald, Khazard War Lord, Tree Spirit, Moss Giant, Black Knight Titan, Ice Troll King, Black Demon,Witch The Experiment, Giant Roc, Treus Dayth, Nazastarool, Hellhound, Kendal, Ancient Skeleton and other dangerous foes.
Your list of items should consist of the following: 4-8 prayers, four overloads, and a weapon with special attack orb and locator as well as a rock cake. The remainder of your inventory slots should include absorption or absorption potions.
When you enter the dream, you is advised to drink overload and reduce the rest of the hitpoints down to 1 with wither locator orb as well as rock cake. This will make bosses to strike only one which can be shielded for period of time thanks to absorption potions. The equipment you choose to use should bring highest damage output set available (Dharok is a great choice).
Additionally, there are other useful gear items that will aid you in combat Buy RS 3 Gold: Berserker Ring, Seers Ring, Archers Ring, Abyssal Whip, Salve Amulet, Warrior Rings, Void Knight Set, Ardougne Cloak, Anti Fire Shield, Proselyte Armour, God Book, Granite Maul, Amulet of Fury and more. You should bring potions like super magic and super ranging melee.