New Health and Energy Bars. Your energy is now at the top of the screen, at the bottom of the health bar and still blue.

Improved health orb visuals.

Added a projectile trail to the Flintlock's alt fire.

Improved visibility of enemy spawns.

Air Dash now has a two second cool down and no longer takes energy.

The Seer's boss fight room has been completely reworked. It has two levels both with cover and piston pillars. This fight will definitely add value to jump upgrades but they aren't required. The top floor has more cover but is harder to get on without taking damage without proper timing.
I've taken the feedback about this fight and from my personal experience it wasn't a fun fight. Previously the Seer was more of a DPS/HP check and less mechanical. It went against the core hook of DD which is mobility. I hope you enjoy it. If you have feedback please drop it in the community section. I will be reworking the Bombardier next.

Nest spawners now spawn enemies much faster. Before it was too easy to clear a room with nothing to prevent players from destroying the nests. I tried to design them to give players the choice between quick runs and farming. (You still have that choice.) The biggest reason for this change is from what I've seen everyone just destroys them leading to a boss fight with no where near the levels needed to take a boss on.