Hardcore levels could be completed different ways.
Price comparison
GAMIVO Ballistic Protection EN/RU Global
€0,35
Kinguin Ballistic Protection Steam CD Key -5%: GKC5
€0,49 €0,47
G2A Ballistic Protection Steam Key GLOBAL
€1,50
WYREL Ballistic Protection PC Global -3%: gamekeycompare
€2,18 €2,11
eBay Ballistic Protection
amazon Ballistic Protection
Ballistic Protection is available from 0.35 to 2.11 from 4 shops.