Talk:Arena Challenge 2/@comment-25584573-20150301214209/@comment-25584573-20150302100552

I didn't spend a cent during the 1st challlenge - not for PvP-Energy nor for the promo unit.

I look at the other players i meet in arena on my lvl 14 account and see all their promo units in defense (which is absolutely useless on this level), so spending nano for them seems to be no problem at all.

It was possible to get more than 300 nano during events and some sync PvP in the last few months. No need to spend real money on this, only patience is needed (it takes longer this way as you also need nano for the storage vault for the 12k steel to promote wimp, or you wait for some bs with steel rewarded for tier 1 - then you have to be real patient).