feos: The research before making this run seems to be done very poorly. Since 2007 there exists a WIP that is 532 frame faster in Level 1 + Boss. And that WIP was not even optimized to maximum. Since 2009 there exists a real-time run that uses quite some tricks that prove this TAS's sub-optimality. The main thing is skipping the Level 4 Boss (saves ~13 seconds) by scrolling the camera up, which does not let him spawn. Also, standing right before the mini-boss of that level, one can kill him a second faster than in this TAS. This does not come from the difficulty difference, since that only adds 1-2 HP to bosses. The game speed isn't different in a European version, used by that RTS. I also can't agree with the difficulty chosen here, because it does not affect the gameplay, it only increases the player's damage. That means you can do much more damage boosts in an Easy run, not losing actual gameplay. Rejecting the run, and hoping more effort is put in a TAS of such a complicated game, ideally several people would work on it, due to heavy luck manipulation required.
Here's another Yes vote, because I'm a sexy duck.
Even the one-shot thing isn't impressive because the game normally signals you when you're lined up with an enemy.
I really keep having the feeling that this website could have so much more in terms of TASing tutorials. If I think about all the things I’ve learnt in 5 years of TASing, and then look at this site and see nothing of it… it’s really sad.
But as FluffyMoth and ACE Boy said, it's unlikely it can be vaulted... but hey, it was worth a shot.