Hello everyone, nice to welcome you on our site, this page even has Level 2 answers. I enjoy it =D
Level 2 - IGINDNB
The answer to this puzzle is:
Words: BIDING, NIDING, INDIGN, BINDI, DING, IBID, BIDI, NIB, DIN, GIN
Bonus words:
BIDING, NIDING, INDIGN, BINDI, DING, IBID, BIDI, NIB, DIN, GIN