On the XBox, both Fracture and The Force Unleashed front-load easy achievements, boosting your gamerscore right in the first hour. It's starting to feel like a bribe.
Many times you'll need to plant a grenade precisely to solve a problem; a targeting system like the one used by Gears Of War would have been a big help.
Indie games often have better success with clever game mechanics, because they can't tack on millions of dollars of boilerplate third-person shooter play. Instead of echoing Portal, Fracture is more like Prey.