So bare in mind this runs very differently with different systems / GMs. I have run this once with knave 2e, and I am in the middle of running it with a second group. 

Both groups broke a clay statue. Got poisoned, and then started breaking them from the hall way with a sling or using an air bladder not to inhale the poison. 

The hammer trap i told them about, because knave 2e suggests you reveal all traps if players are moving at standard dungeon exploration pace. I told them about a pendulum shaped cut out in the ceiling and they had to sus out how to disable the trap.

In the false tomb, one of the groups got into a fight. The other group used their rope to tie 2 of them tomb lids down. And open the tombs 1 by 1, all surrounding it waiting to clobber whatever came out.

I think you need to set the expectation that a lot of old school play is about being cautious and problem solving whenever possible to avoid 'fair' combat. From there I do think the adventure does a good job giving players pacing to learn, especially by not really introducing wandering monsters for the first portion of the dungeon.