Rebalance suggestion

[hugojmaia]

This is for the AP system, basically add a material cost to all upgrades after retooling the AP gain from enemies so people don't cheese it with stuff like the ruin mission.

If it remains purely AP based, people will find a way.

[Redkitt3n14]

Sidenote - an exploit for AP fast seems to be dealing 90% damage to any space encounter monster with mech, then finishing it off with a standard weapon