Beams of light.

I'm not sure how I feel about this particular area I recorded, I haven't played much past whats in the video quite yet. But the first part of the game was definitely more platform heavy and getting around and avoiding traps like spikes. This part was significantly more enemy heavy, hopefully it's just because they were introducing the funnel and not a sign of things further on down the game. There's definitely a place for there to be enemies in the game but having this many just seems like overload.

That said I really enjoyed the more platform heavy puzzle nature of the game. If it goes in that direction and gives lots more of that with some enemies spread throughout that would be really awesome. That said the boss fight was kind of a slog, it didn't take me too long to complete it but again it felt more tedious than challenging. Throwing dozens of rockets at you when you aren't the most agile character in the world is kind of annoying. And there wasn't any sort of mid boss checkpoint just, hey you died now go back and do it over again. If you didn't have a body armour for it I expect that it would be a real pain to do. I'll probably play more of it, been a little bit busy doing other work stuff and otherwise not super up for playing something that requires actual thought or dexterity but hopefully I'll get round to it before too long.

The rest of the game (and certainly hard mode) is much more about puzzles than enemies, though often they mix both in to make it even more difficult. You also get more body armor later so it becomes a bit less brutal (except for the aforementioned hard mode, which is insane).  
 
Overall I thought it was an excellent game and nothing was really that difficult or frustrating. I probably spent longer on some puzzles than the bosses, and I have yet to get past a brutal puzzle near the beginning of hard mode. 

@NyxFe: Good to hear I was definitely concerned that it wasn't going to be more puzzly in later levels but I look forward to playing more of it this weekend.

Here is a video series of us playing through the game in 2 hours :)

We are working on something that will make things easier for players but maybe this will help a little.

http://www.youtube.com/watch?v=BXcVUt5ASu4&feature=plcp