Originally Posted by
Tsuketa
Cosmic dungeon (first wickerman): 4 sand per run. 600 sand gives you 150 runs. 150 runs gives you 3 x 250 = 750 cyborg currency.
Lab dungeon: 15 sand per run. 600 sand gives you 40 runs, or 40% of 100 runs. 100 runs give 1500 currency, so 600 sand effectively gives 600 currency.
LoL 1: 6 sand per run. 600 sand gives you 100 runs. 100 runs gives you 2 x 250 = 500 cyborg currency.
Add in the fact that the first wickerman dungeon takes 7 seconds to run and lab and lol take longer, you're best off with cosmic.
If the LoL grind event starts during this, though, it may make sense to do LoL to "double up" the rewards.
But, now the bad news:
600 sand cost 150 ironite and gives you 750 currency. You need 25,000 currency for christmas cyborg. 25,000 / 750 is 5000 ironite.
So, go in with your eyes open. Getting christmas cyborg costs 5000 ironite.