Unless I'm misunderstanding the code in some way, the fix for #21 seems to have either not been applied or gotten reverted. Right now it looks as if the Sanguine Helmet effect will work regardless of the presence of a shard and that it does count against the maximum number of upgrades allowed.

I assume the correct behavior is for the Sanguine Helmet to only operate if there's a Shard. In that case it seems like hasIRevealer and hasIGoggles should both be checking that there's a shard and not too many upgrades, but they do not.