Yes, it's a fun game. It's a mix of third-person shooter and tower defense-like gameplay. Definitely worth $5.
YES!game of the year edition is on sale for 4.99 anyone own this game?
I thought the DLC was worth it too, at least the Alchemist's Pack thing. It's super useful on just about every map I tried.
I'll usually toss the grenade-like objects into the path before they come and then switch back to the ranged weapon. It seems to work well.