- Getting floor 100 disk (20 tags, up to 20 days worth of time, assuming no loses)
- Getting titles from 3 ToUA bosses. (We'll say I did all these in a single day, which I didn't)
- Getting titles from Salvage bosses (4 days minimum)
- Getting Captain Rank (50 tags, 50 days, assuming no loses)
- Obtaining 100k Ampoules (tier 1/2/3/Odin, that's 7200 per 12 days minimum time, 166 days, assuming no full loses)
- Redoing each Assault (50 days)
- Obtaining 150k tokens (Assuming floors 95-100 and making someone else use disk, 100 days)
- Obtaining or purchasing 30k Alexandrite (it's hard to quantify the days required to do this if you did not purchase ANY Alexandrite, but an entire year of taking each and every one from a single group?? OR Up to 90M in purchasing them)
- Obtain 3 ZNM boss trophies (This is somewhat easy, except that the drops aren't 100%)