Thank you for the feedback. The character speed was set a little higher and enemies a little lower to make the game easy at the start. Try getting to higher waves (my record is 21). Then you are happy that the character moves so fast :D But yeah, for a post jam version, we will tweak those parameters a little.
Not all weapons can be powerful (OP). In every game you have weapons nobody wants to use, so just use them and hope the next is better :D If I increase the damage of the rocket launcher, it will be a one-shot. This would not be a good risk-reward system. Therefore, only the sword is a one-shot because you have to be close to the enemy (high risk).
But also those numbers are up for tweaking after the game jam ;)