Then they survived because you failed to do enough damage. How much hp they have is irrelevant and if you think about it a bit it´s a better attitude to have then blaming luck. You can´t improve "luck", you can´t change it. it´s there and nothing you ever gonna do is gonna make it disappear. Random things, like the damage range is something you need to take into calculation or learn to.

example: This guy has 160hp left. You deal 100-170dmg. You have 200hp left and their tower deal 180-230dmg. You might wanna call luck on failing to kill him but I´d call it stupid to even try. (The numbers are fictional)

oh great, a debate about determinism in a "tips for new players" thread, that's just what we need.  Can you guys take it to PM or something?  

Luck may or may not play a large factor in games, but as a new player it's probably more useful to pretend that there is no luck and look for things you can do that tend to result in winning more.

Another tip: Play the game, not your demigod. Most games i played i won with lvl diffrence of 5 ( Last game i was 8 he 15 ) But I won.

This.

Learning when to run away is probably the single most important thing in DemiGod.