The levels scale well. The first level gave plenty of time to realize the mechanics and how powerful your tethering lasers are. I like that 1) your ship can't be harmed, and 2) the ship still has it's weak weapon; this still entices the player to actively shoot, rather than focus purely on positioning. As a commenter below said, positioning in relation to level ports and enemies is a less explored and interesting spin on tower defense shooters. Great job!!