A surprisingly enjoyable game.
This game hasn't been wildly popular but it certainly should be: one of the most entertaining puzzle-type games I've played. The creative possibilities that can come from using the various weapons are far greater than initially thought due to rebounds, attacking through walls and multiple kills. Although easy to start off, Infinity Forever can be extremely challenging and those three lives are well needed to pass certain levels.
As with many action/puzzle games, a lack of a storyline is overlooked in favour for the creativity needed to pass levels. And a healthy blend of levels there was! The music was good but sound effects were lacking.
Furthermore, the main thing this game lacked was replay value: there was no hidden items and no achievements to keep people playing over and over. Newgrounds medals would vastly increase the popularity of the game by linking to the medals page, as well as adding additional challenge for medal hunters.
All in all, a surprisingly delightful find which should be much more popular than it is.