For a point of note: If you Burthorpe a job (inquire Tureal or Spria to supply you with a simpler one), then you have to OSRS gold begin at the complete beginning & do 4 tasks without any issues. If you invest 30 points to modify your mission, you continue without a penalty. I disagree with the logic of this second, and here is why: IME, it's actually much faster to perform 9 tasks using a low master, then do the 10th with a greater one - motives being
Every so often, that the counting-up jobs were beyond my capabilites and I needed to Burthorpe the job (starting my stage job count over) or spend things to alter the assignment. The tougher missions take up a lot of time and resources (meals & potions). I found that I can do 9 1-point missions + 1 60-point assignment from Sumona, for a total of 69 points, in far less time than it takes to perform 2-3 harder assignments for just 24 - 40 points. Once I started using this plan - 9 jobs from Mazchna, then the 10th from Sumona - I had my 400 points in 2 days. I also had a nice inventory of charms, herbs, etc. in the quick assignments from Machy.
I use Sumona rather than Chaeldar since I found she will often assign monsters that are in the Desert Slayer Dungeon - but performing their considerably easier and quicker counterparts at the Fremennik Slayer Caves fulfills the mission equally too. She'll tell you/suggest that you use her dungeon, but you can ignore that.
I only had to reset 1 job out of her, which was Terror Dogs; I did Tarn's Lair, and killed about half of my assignment before I ran out of food. Problem was I didn't wish to spend points on learning how to cheap RuneScape gold make Slayer Rings OR negotiate the maze . My following points spent is to get Slayer Ring making!