Risk of rain

[Elder]

you should play it there is a free demo for it. Its not out yet but you can buy into the beta ($25) if you really want it now.
If not its $10.

Side-Scrolling action rpg, rougelike, with character classes, items and local coop if you have the beta.
I highly recommend at least trying it here

also my shameless self promotion of how bad i am at the game

The Risky Business of Rain