This game has no RNG in its combat. You know exactly where you and your enemies are going to hit and how much damage will be dealt on hit and what effects will be applied(fire, acid etc.). And maybe this is the reason I spend 30 min on one map, carefully reviewing my options and trying to plan things to the best of my ability. In order to keep the game fresh and to have replayability value there is RNG in the mech pilots you are given and the equipment you have access to. The maps are also randomly generated. For me this is the right kind of RNG, the rules of the game are always the same but the equipment you use and the maps you play on will differ from playthrough to playthrough. The soundtrack is also excellent. This game is not FTL 2, it is not even remotely related to FTL but is awesome nonetheless.
On paper the game appears to be bullethell with kind of metroidvania maps design. And it is sort of that - small scale metroidvania levels with bullethell like combat. However the game reminds me also of the early Rainbow Six titles. I spend a fair amount of time before the mission even starts to look through the map and decide how I want do accomplish the main goal - destroy the core(what sub-systems I definitely want to destroy and what sub-systems will be good to destroy to make the mission easier if I have the time). Then when I have my "points of interest"sorted out I look for the most efficient way to accomplish them. What shortcuts I can take to save time, which way has least amount of enemies. You can't really set waypoints on the map as in Rainbow Six so you kind of have to open the map during a mission and get your bearings. The combat itself is nothing special, but it can be quite chaotic and tense. The mouse and keyboard controls feel nice and I didn't feel the need for using joypad. Since it is kind of roquelike the save function is available only on exit and if you go bankrupt the game ends. The campaign mode consists of a few levels/ships but the purpose is like in FTL or Convoy to use these levels and prapare yourself for the final stage. There are also Rouge mode and co-op but haven't tried them yet. If you like the type of game when you plan first then act and don't mind if at some point things don't go your way and you have to start from the beginning the game might be just for you.