I logged more time on Impossamole today than ever before (about an hour). The bad hit detection reminds me of Legendary Axe. While LA overcame this flaw by keeping the onscreen enemies to a minimum and giving them predicable attack patterns, the enemies in Impossamole are limitless, fast, and mostly unavoidable. Were it not for the shitty hit detection and relentless baddies, Impossamole would be a good game. The music and grafx are solid, the play control is good as far as jumping and moving are concerned, there's plenty to explore, and they even put in a cute little intro. Reading the manual, I was happy to learn that stages can be played in any order by pressing the select button, allowing players to reach an impasse on ALL of the stages before permanently shelving the game. In all seriousness though, I have a new respect for poor old Monty and beating the first level was kind of fun.
Also played Space Harrier, Legendary Axe, and Outrun on "hard" for the first time.
At the very least: Psychosis > Bravoman's horizontal shoot-em-up
And Shockman's shooting levels!