Alright, since this thread is pretty dead I'm posting my guide right now and for future:
2)Do you see any ')' symbol on the screen in the first room of the first level?
If no then restart game, if yes then:
3)Is it 2 handed sword?
If no then restart game, if yes then:
4)Is it cursed?
If yes then restart game, if no then:
5)Rogue is at exp level 1. Equip your mace, kill everything with bow and arrows from the distance if possible. After every fight restore to 10-12 hp then explore level further.
6)Congratulations, your Rogue is probably at level 2. Now kill only hobgoblins with bow.
7)Congratulations, you Rogue is at level 3. Equip 2h sword, kill only Rattlesnakes with bow and arrows. Shoot Ice monsters from at least 5 grids range, otherwise do not touch them(you may tho but only if they stop you from exploring level) Throwing arrows without bow is a waste. Other missiles are good to throw without bow.
8)Congratulations, you Rogue is at level 4,5. If you meet a centaur at level 5 kill him with arrows.
9)Congratulations, your Rogue is at level 6,7,8. From now on you will need arrows only for Rattlesnakes, Ice monsters, Nymphs. Don’t touch wraiths if they sleep and shoot at leprechauns if you need exp.
10)Now you come to the Troll country, they are not that hard to beat with 2h sword you will need to hit them 2 or more likely 3 times to defeat, you will miss quite a lot tho. Don’t be afraid of using scrolls/wands/potions to survive. If you have lots of food/ring of slow digestion feel free to farm exp to become Rogue level 9 at dungeon lvl 12.
11)Congratulations, you Rogue is at level 9. Wraiths are really no threat with 2h sword you may even abuse them ( if you got low hp boost after lvl up) to get lowered by them in level and then kill them to get more hitpoints on new lvl than it was on previous one. But don’t risk to touch sleeping Wraiths.
Also, it sometimes may be a great idea to stay a bit on 16 level to farm exp up to become a Rogue’s level 10 before encountering black unicorns.
12)Congratulations, you Rogue is at level 10. Black Unicorns is a real big threat due to high damage/evasion rating and even being on level 10 usually doesn’t give much bonuses to you. If you meet them and if your 2 first hits do fail to hit then use something from inventory to survive, if they do not then you might try to kill them in kiting. From now on you rush on levels (this means you should act like a simple Rogue: you see a staircases you run to them and go deeper)
13)Congratulations, your Rogue is at level11. Medusa’s aren’t a threat if you manage them properly:
From now on (level 18-26) stay in doors of every room and search for 5-6 turns, even if Medusa shows up to kill you and at worst confuses you, you can only go back in tonnel or hit her, Since she dies in 3-4 hits and is easy to hit you should be able to deal with her with no problems.
14)Congratulations, you Rogue is at level 12,13,14 etc. The only real problem on such experience level is Dragon. If ‘D’ aggroes on you zap him with the wand of polymorth, if you have one obv. If you don’t then just fight him drink heal potions and at worst drop scare scroll or read tp out scroll. Dragons are doing tons of damage but they have very low hp and die in 3-4 hits (usually in 3).
15) After that you’ve found an Amulet it removes all you hunger (so it basically acts like 2 rings of slow digestion) so you may freely search for trapdoor traps.
16)After that you’ve been lucky enough to come on level 19(No dragons’ threat anymore) you are basically a winner of the game. There are no treasure/gold piles on the way back and Nymphs/Leprechauns came to not dropping such either so be careful with your items inventory management.
All hp monsters conversation into the number of 2h sword hits is applied to +0/+0 sword and 16 str character. Also , sorry for English.