I tried the demo and found it intriguing, but didn't get a Metroidvania feel from it. Can you please elaborate?
Metroidvania games are typically characterized by having an ingame explorable map, where sections of it are cut off from the player until certain upgrades have been found. Warp works that way, although there aren't as many upgrades and different items to find and it is slightly more linear, than is typical for the genre. The game makes up for that by having upgrades that are different and more imaginative in terms of game mechanics than what you usually see. To put it another way, if you found the latest Metroidvanias a little stale(like Shadow Complex for instance), give Warp a shot. It takes a different approach to the design template and as mentioned combines it with elements from Metal Gear Solid, Portal and Splosion Man and yet still manages to feel unique(I could elaborate, but I'm trying not to spoil anything).
It's not perfect by any means. There are a couple of difficulty spikes throughout the game - the challenges are way too hard and the final boss will take a couple of tries - and having more variety in graphics and better music would have been appreciated, but it certainly deserves more support than it has been getting.
A shame something as mechanically interesting as this goes unnoticed, while lesser retreads gets the popularity vote..
