So I came back recently having literally never tried this skill - have now but am only level 15. I'd quite like to get it more of a try purely to get chaotics. Having said this, my other skill stats are fairly average in a lot of areas.

 

Are there any must have levels in certain skills or is it possible to suceed without them?

It is possible to succeed without them but skills in which high levels are particularly useful are: Combat skills - obviously, Prayer - for soul split and protection, Herblore - for overload before floor and potting for skill doors within floor, Runecrafting for crafting your own runes and binding surge boxes. Then obviously just the higher your skills are in general the better.

I believe it's better to have your skills of similar level to avoid not being able to open skill doors which in turn lessens your XP per floor.

Yeah for dg in perfect ideal land you really want maxed stats.

 

85-90+ in everything would be optimum, but failing that it's just a matter of similar stats help to avoid 1 person having to do all the work.

Eg when I help noobs in my clan with some low end dg being helpful it's pretty much guaranteed I will have to do every single puzzle and skill door which in a proper floor would be a pita.

Make sure you have the important stats for moving around (64 magic for group gatestone teleport, 59 rc for double cosmics helps a bit), high in one of attack/ranged/magic and high defence (ideally 99 but 80 and 90 are good milestones too), high prayer only gets useful at 95 really, herblore can help with pot doors, any other skill is luxury basically but every level helps.