Gaming masochism at its finest.
There's nothing like remembering those excruciatingly difficult old-school games by playing Lastman.
Not only is it incredibly unforgiving (no checkpoints and precise jumps), the game then spits in your face by placing ads every 20 deaths! Awesome!
Everyone needs to lighten up and realize that all of this is intended. The main author is the same guy who made V-TECH RAMPAGE -- he's probably laughing right now at your complaining.
This game excels in what it does; that's why I give it a 10. Congrats.
:)