Sentence 1: Bruce was exploring an abandoned house. 
 Sentence 3: The stairs didn't feel too sturdy 
 Sentence 4:  The handrail gave out from under Bruce's grip 
 Sentence 5:  Bruce decided not to go up the stairs 
 Option 1: He was going up the stairs. 
 Option 2: He was going up the stairs and didn't give up going up the stairs ever.