1) Timing is 60% of the battle. Timing of when to fight, when the tick happens, how long their protections are up, when to input in command.
2) Knowing which commands to input is 20% of the battle.
3) Gear/Legacy Choice/Race/Size/etc. is the other 20% of the battle.

Raping 100 elf warriors at their weakest teaches you to rape duergars at their weakest.

Furthermore, you do not necessarily have to stalk/assassinate. That's just one aspect of how to play an assassin.

How do I know this? Experience at playing multiple CF like muds. Counting ticks is EXTREMELY important.

Back to this silly brief :P