I did leves and GC until level 50 on each of them. For miner (my first to 60), I did leves and GC turn in's. I had no idea how to do the collectables. XD For my bot, I did a couple leves, the GC (of course), but mostly collectables. Especially level 57+. Those last couple levels seemed to go by waaaay faster than they did on my miner. Dunno if it's just a perspective thing, tho. It really helped that I had my miner at 60 to farm the blue scrip gear so I could jump right in at the higher end of the collectables (not the ones that only give like 10 scrips or whatever.)