...especially in co-op.
If you liked the old arcade games, like Metal Slug, Chaos Engine and some others (maybe even Golden Axe), than you will like this game. The graphics, scound it excellent, works great on low end hardware and can be played with keyboard, but cotroller is recommended, since with keyboard it is quite hard to shoot projectiles in 45°.
Relly, two things, I miss are maybe one or two additional playable characters and a yellow/golden arrow with the Go! sign or similar, that would show you the way, when you did sweep off all the enemeis. So that you don't need to wander around and wasting time 😉.
Anyway, highly recommended when on sale.