In this your level and the level of your enemy makes a HUGE difference.
You're level 2 and the enemy is level 4-5? They'll kill you in 2 hits. You have no chance of killing them unless you know exactly when to roll out of the way, but it'll be slow and painful.
The game as said by some others is said to be downright brutal for the first 12 levels or so, and then it gradually gets easier, so if you can, try and stick with it.
But yeah, there is no level scaling whatsoever in this game. Generic Crypt #1 will always have level 4-5 skeletons regardless if you're level 1 or level 15.
Best advice to give you is to try and do every single quest you come across. If you enter a dungeon and the enemies are a level or two higher than you, then leave and see if there's anything else you can do for a few levels.
And I'd also recommend checking out gamefaqs for more advice, one of the guides on the PC version is considered the best.
