Cally´s Trials (Steam key/Region free).

http://store.steampowered.com/app/476510/
It´s time for Cally to do what she does best: rescuing her kidnapped parents!
Set before the events of Cally´s Caves 3, Cally´s Trials is a roguelike action-platformer with a weapon-levelling system that lets you evolve weapons as you use them. Cally must save her parents from the maniacal Herbert, who has laid waste to the Caves and built a massive lair deep inside.
Herbert´s experiments have twisted the caves into a living nightmare, and our plucky six-year-old heroine must overcome staggering odds:

110 levels packed with vile monsters to fight across 6 biomes
6 insane bosses, including Mama Bear´s first appearance, and Carl IV´s Dad.
12 weapon classes to level up, use your weapons and they grow stronger, every once in a while they evolve into a new form with new effects!
Item/Powerup Store to buy permanent upgrades for Cally
38 song soundtrack
roguelike structure means earning money on every run and buying upgrades is crucial to success