Wow, I died fast. xD
-Minibosses are insane. Both Paragon and Reaper have attacks that I honestly can't figure out how to avoid. Reaper can only be hit from the front, apparently, and then randomly shoots this ball of damage that perfectly homes in on you. Paragon shoots clusters of four bullets that perfectly home in on you. Wha?
-RedShift is cool. However, attempting to fire your energy weapon or missiles does not cause time to advance. This means that you can only use these weapons while moving, which is annoying as heck.
-The level of polish compared to the early versions is huge. Love the interface, love basically everything graphically and design-wise. There are still some outdated things, though - the options still give you the choice for non-momentum based controls, and energy weapons still list energy use per second which is really a less important piece of information now than "how many times can I fire this per room?"
-Need to get in the habit of stopping movement as soon as I enter a room. I've walked into caltrops blindly a couple times. Ouch.
-Energy weapons that charge badly need a visual indicator of how charged they are.
-Wallmaster is a monster. Tore me to shreds, didn't feel like I could do anything about it. Can't imagine what he's like on Hard...
Paragon: Best to just keep a distance and keep firing, and watch it's motions. Homing missiles: More sprinting!
Reaper: Sprint! Run circles around it. Really, REALLY close to it (I'm usually nearly touching it while doing that). And learn the timing of the lashing attack it does when it suddenly stops, so you can simply leap away right before it does it. Rinse and repeat.
The minibosses are Pepisolo's work though, so I'll let him give more advice or comments on them if he'd like.
Redshift: That bit is a known issue; might already be fixed in the next build.
Interface/descriptions, whatever you want to call it: Yeah, those are issues. PARTICULARLY item descriptions. That bit is actually a pretty big issue right now.
Energy weapons: YES indeedy they need a charging animation or something.
Wallmaster: Why in the bloody hell is everyone dying to this? I actually stuck the damn thing in the floor 1-2 only category because it seems so easy. Clearly, I need to have more of a look at it. I'm well aware I'm not the best at judging these things (when I'm fighting it, I'm literally right in front of it the whole time). It doesnt have a Hard mode version yet. Just assume a difficulty level of "beats you over the head with your own face" because why WOULDNT I make it do that?
Caltrops: ARGH HITBOX