Cheap Instant Gratification (With Good Combat)?

Yo yo,

So with all the real releases coming up in the not too distant future (AA, mainly) I'm finding myself lacking a game which has satisying combat yet also features progression. Essentially what I'm looking for is something that's either f2p that only needs a few quid sunk into it or a game that doesn't cost more than, say, £20. I'd greatly prefer action-y combat (if it's at all like LOTR: War in the North or Dark Souls that'd be brilliant) with obvious progression yet without any major grind.

I'm thinking something like Dungeon Defenders, progression-wise, where things obviously change but it isn't super difficult to level up.

Would appreciate any suggestions