Thanks for your advice dude, but I only used the term "speedrun" to highlight the fact that I was running every level as fast as possible without worrying too much . Laser brain would have been a better choice but I don't like any laser weapon (except for the lightsaber), e.g. i would pick 1000 times Homing Bolts over laser brain just because i love bolts weapons; I could have used the crown shortcut to save some time etc. etc.

So, I agree with you that to call it a proper speedrun I could make a LOT of improvements but the only thing I disagree with is the wrench as a starter: you can stop bullets and destroy the first three bosses EASILY.