The shop works great! no bugs so far, so thats nice. there are (as of right now) 4 skills to buy, and one costume.

the skills are as follows..
Burst Blast: Fires bullets in all directions. good for large crowds of weak enemies (such as the bees or heat orbs)
X Beam: Creates an X shaped beam of energy. the counterpart to vertical and horizon beam.
Burst Bomb: Bouncing bomb fires bullets in all directions. similar to burst blast, but more bullets, longer cooldown. great in tight spaces!
Fury Blade: swings a mighty sword in front of you. good damage and wide range, can also hit enemies above you.

the costume is called Pali Knight. want to look like a Knight and shoot bullets from your dagger/sword/axe/hammer/etc (depending on your gun upgrade)? this is the costume for you!

anyway, some new screenshots have been posted if you want to see what the new level select and shop look like.

Well thats about it, keep an eye out for the new update, it will be real soon!