A Wasted Opportunity
OK, let's get the big problem in mind here: It's Spider-Man in small, confined spaces. If nothing else is said, this alone qualifies the game as being absurd because it takes all of Spider-Man's biggest advantages and negates them. The game handcuffs Spider-Man from the get-go.
This isn't the ONLY flaw in the game. Spider-Man 2099 is just not an appealing character and the incessant griping between the two Spider-Men across time does not really help the game. It is a tedious "character-action" game with less-than-stellar melee attacks and the controls aren't that impressive.
The prior Shattered Dimensions was a great game, partially because none of the Spider-Men variants had enough time to really grate on your nerves. Sure, characters like Noir were interesting and different, but that the pace changed all of the time and it kept the game feeling fresh.
Edge of Time is just horribly disappointing on all levels. You're infiltrating the Alchemex building in two timelines, which would be lovely if the building wasn't a boring collection of long ventilation shafts and boring square rooms. Instead, you're stuck with the same really boring building and rooms but over two different timelines. It's Sonic CD --- if Sonic CD was complete and utter crap.
This is just not a terribly good game. I think Beenox is solid, but this game was a bad idea on a lot of levels. As a hint: If he cannot move around a lot at all times --- you probably won't be making a really solid Spider-Man game.