Lacks the visual clarity the genre demands, has some interesting ideas in its systems, but it feels like it bungles a lot of them through non-telegraphed instant death attacks in the later levels, as well as just wonky movement and a power-up system that leaves you feeling either over or underpowered basically all the time. I don't think I'll be revisiting, and my compulsion to play as many GHM games as possible is the only reason I saw it through to the end.
Edit: bumping it up half a star in hindsight because of the number of interesting gameplay setpieces I still recall, like the rotating maze, or the branching paths in the waterfall level. More misses than hits, but they're all at least good ideas, even if the execution is sometimes off.