Dark Beasts- If you use a cannon, a beast of burden, and perhaps piety, they will fall pretty quickly, and inventory space wont be a problem. At that Slayer level, your melee stats and prayer should be very decent. They drop Dark Bows, a large amount of blue charms, and are right next to a rune rock if you have 85 mining. Fire Giants- They are never crowded in the chaos tunnels, which is multicombat. Use a familiar, either for combat or healing, and you'll rip through them. The drops are quite nice. I usually get one or two rune scimitars, and at least 100+ gold charms. Jungle Horrors- Duradel doesn't assign these, and once you hit 100 combat and 50 Slayer, you should really be using Duradel. You sure that Duradel don't give Jungle horrors? Cause i am doubting. I don't think he does anymore, he used to.