Surprisingly deep and well thought-out with its combat for its price. Only complaints are that the platforming sucks and the later arenas rather take the piss with the enemy placements. Walking bomb enemies work better when the auto-aim doesn't aggressively aim AWAY from something you're trying to precisely point at, and that includes the environmental explosives I'm trying to use to my advantage. Also, enemies that shoot homing missiles are fun when there are few of them, not four of them at a time when you're being hounded by two dragon robots with spears

Complaints aside, this is absolutely worth the $8. It's worth more, actually.