My two main gripes with Vaporum lie with the combat and the puzzle-design. -> The combat felt rather clunky and suffered from very bullet-spongy enemies, which also dont come in a huge variety. The pattern is usually: Open door, step through -> door closes & some enemies appear -> kill them, door opens again... -> The puzzles get old & tedious rather quickly, way too many consist of pushing/pulling crates around to clear a path or fill holes in the ground, some are very tightly timed, and some rely on you seeing very fine details that can be overlooked easily. (For background: Yes, I _have_ played Legend of Grimrock before and enjoyed it very much.)