Or Biomenace, or BioMenace, or whatever suits your needs best.
Get the game here.
Direct download link.
-It's a platformer!
-You have a mullet and an assault rifle!
-Fight both mutants and robots
at the same time!
-Marvel at Jim Norwood's ability to actually draw things at a reasonable scale!
-Possibly original music by Bobert Prince!
-A "Hard" mode that's actually hard!
-Discontinued and thus released as freeware!
-Weepy, albeit short, "good old days" monologue included! (Though it turned out to be kind of prophetic, referring to indie games.)
In all seriousness, this is in my opinion a great game, which I've been playing and replaying since before anyone used Windows. I decided to post it here only now. Those wondering how to play it without actually installing DOS should try
DOSBox.
Required but honestly useless screenshots, lazily taken from the game page: