When I first considered getting this game it was for a few things:
1. Combat looked quite similar to a space MMO I used to play and love (I knew this was not an MMO-style game, but the gamePLAY is what I am feeling similar) and it also appeared very skill-based (aside from the mech-like form)
2. What seemed like smooth flight controls and the sort
3. Upgradeability (which was my biggest inclination to purchase this game, as I love games in which they give you the option to stat-build, pick skillsets, as well as upgrade items/abilities/etc.)
HOWEVER, when I start playing this game, the feel of the game is very clunky and not as smooth as it makes itself out to look (holding S to reduce speed actually tries to make you go reverse, giving you poor camera control when attempting to slow down). Also, when in combat, the gameplay is more like your average airplane shooting sort-of game where you must lead your lasers (which I don't mind much, aside for it being in a space combat game) and the missile lock-on is very slow and unappeasing (very bland missile animation).
I summed up just a few small things right there, but to address the biggest thing that pulled me in, massively disappointing me in the end was the customization and ability to upgrade your ships.
Based on my reading, I knew there would only be 3 ships to choose from, that's fine, but when the only way you can upgrade your ships is by destroying a freighter in order to obtain a predetermined upgrade instead of providing a skill point or whatnot, greatly limiting your creativity or playstyle. Also, you gain points every set of waves. What do you use these points for? You use them to hire small fleets of allies and rank up their AI. You gain points at the end of each set of waves based on how many allies survived, then they VANISH. Your allies do not stick with you through the sets of waves, only for ONE SET. After selecting your allies to come with you and whether you want to upgrade their AI, you get to pick your primary and secondary weapons... HOORAY!!! But... You are unable to pick different lasers than the base selection given, and you can only swap one of your missle slots for the other missile you already have equipped and naught else. This customization may improve later on, but for the first ship available, that is all you have access to.
Also, the mech form along with auto-aim (hold left-shift to snap to the next target once your current target dies + turn to face them!) is so overpowering, I just run into a mob of enemies, activate, hold shift, and shoot my primaries to end up with a combo of 8 enemy ships killed or whatnot. The mass-missile aiming makes close to no sense that I have no clue what ships it's locked on to nor do I have any idea why it's possible to lock on to the same ship more than 3-4 times (around 15 or so locks is the limit).
The map size is larger than needed, at least for earlier rounds. It doesn't give you enough time to fly between objective targets (like freighters so you can get upgrades), and if you do it takes off 50-70% of the time you have, leaving you with too little time to kill the enemy wave in time for the multiplier bonus (this is not helped when the enemies spawn on all 4 cardinal direction entrances).
The gameplay is very flashy, and it builds itself up a lot. I wasn't expecting much, but I got less than I wanted and I am generally displeased with the way this game has turned out to be.
On the upside, the game looks very nice and follows through with being just wave after wave of combat. If that's what you're looking for, then go ahead and get it, if not, look elsewhere.