Drums:
1. Ask Дзира about it first.
2. Then you ask Chloe.
3. Next you go to Dzira and slap her ass.
4. Then you go back to Chloe.
DONE!
Shu's weapon:
1. Talk to Shu about it (take the quest)
2. Buy the blue stone in the shop.
3. Give it to her.
DONE!