Thanks for your suggestions.

For number 1, I don't feel that a diagonal sprite is really necessary because of the rainbow trail coming off of the ship. The trail gives you a bearing on what direction you are going if you can't already tell.

For number 2, upgrades are definitely planned. I was thinking stuff like faster firing rate, spread shots, etc.

For number 3, the problem is that it's not supposed to be an RPG. Kamikazes was inspired by Geometry Wars. It's just meant to be a fun game you can play anytime you have a couple minutes to spare and you are just trying to beat the next guy's score.

Thanks for playing and reviewing :D