MISSION COMPLETED MISSION BRIEFING
Developer/Publisher: Taito
Date of First Contact: December 10, 1986
Body: 1-megabit Famicom cartridge
Alias: Takeshi no Chousenjou
Takeshi's Challenge
EVIDENCE

Kill the password guy if you want.Clipped through a desk! What a way to die.His secret stash.Beers!Yep, you gotta sing karaoke.
Bustin' ma balls at the pachinko palace.Play pachinko.Password in.The menu screen.Taking a trip across the sea.An island in the south Pacific. Why are only the black guys hitting me? :P
　
MISSION ANALYSIS
Takeshi's Challenge is a side-scroller adventure game that is perhaps famous for the ridiculous tasks it asks of its players.
Some are exaggerated, but now you can play this legend of bad games in English.

This mission was undertaken by:
KingMike - hacking, editing, tools, graphics
Main translator anonymous.
DarknessSavior, Paul Jensen - additional translations
SPECIMAN
Speciman 1.0, First Contact December 25, 2011. The ROM needs to be expanded first, using a program like nflate (from my Tools page). The 1986 ROM was tested but the 1990 version should work as well.
SECRETS/HINTS
In regards to the rumor of the 20,000 hit final boss. That's not actually true. You actually can warp to the last room if you punch exactly 30,720 (7800 in hex) times on the title screen. But you'll miss pretty much the point of the game if you do.
I think the Pachinko game is rigged so that you will be booted out after getting around 3,840 (0F00 in hex) balls.