Thank you very much, I'm glad you liked it!
How and where did you blow up the ground, before you had to restart? Usually, you should be able to get out of any hole with your grapnel (at least, as long as something is still above you, but the holes shouldn't get that big ^^). If you still know where it happened, I will take a closer look at it.
Yeah, the alarms are intended to wake up all the guards...that seems to be working :)