It regular combat it would not make it harder to hit. The point of a resistance spell is to make one resistant to what would be considered uncommon battle techniques, so anything outside of normal combat. Yes, there are spells that also apply to Armor during combat, but at first level those spells are unavailable. Also, a turn is 6 seconds, making 1 minute 10 standard turns.
Also, SR, the only window in the room is above the door that you entered through. However, the window has been enchanted so no light can go through. How the battle field is set up is that there's a door at the end of the rectangular room (roughly 30x15), at the other end is the gem, with the creatures between the gem and you. So the tomahawk throw is good, the bull rush isn't.
ALSO, throwing, running, then attacking is three standard actions whereas you only get two per turn. The reason the necro did so many things per turn is that the spell that animated the corpses was quickened and did not count as a standard action, also, movement in less than 5 feet (him ducking) does not count as a standard action. So therefor his only standard action was summoning the oozing things.
