SteamWorld Heist is a short but pretty fun game. The story is alright, but the game itself is amazing despite its short runtime. The aiming is fun, if a little frustrating thanks to the characters' wavering aim. The difficulty was decently challenging (for the record I played mostly on "Experienced" difficulty).
This being the "Ultimate Edition", the game includes a DLC character and their associated interactions... and that's it. I wish they did more with the character's story, but I enjoyed their gimmick, and took them all the way to the final boss.
Also there's a bunch of fun references in the collectable hats, that's always fun.
This is my first SteamWorld game, but I solidly enjoyed it, and can recommend this game as a great first step into the SteamWorld franchise!