Talk:The 500/@comment-26260295-20150406172931/@comment-25956839-20150406212529

To clarify I would recommend you do all the level 1 upgrades as soon as you start stage 01. there is no need to do any level 2 upgrades (all GC), it's cheeper to pay 45 GC to skip 9.3, than 250+ GC for the required upgrades. All the events, except 9.3, can be completed with only level 1 upgrades.

@RR3fan

You should cloud save before starting each event, if you fail, cloud restore to get your GC back. I did an experiment, and spend 800 GC+ then restored and got all my GC back: [See Comment here]