[General Discussion] Hardest game(s) you've ever played

oh weird, my post diappeared... o.O anyhoo.

apparantely, i need to post some reasons so here it goes.
SNES:
actraiser 2: lots of one kill traps and hard-to-kill enemies. lots of mini bosses with difficult mazes.

PCEngine:
echo : you have limited speed and slow ammo and fast, hard-to-kill enemies
mr heli's advenature : strangely the 2nd main boss is one of the more difficult sprites than any other bosses after. it's large, it's fast and it drains life fast
rtype : i think it can be compared to ikagura or metal slug that sometimes there are just so many things to dodge that it's not as enjoyable or ... strategic persay.


i try not to confuse with games that are not hard but just didn't finish the
the last stage.

Jam it back in, in the dark.