Guitar solo locations
You can do guitar solos at the following locations.
Drome Rail: Found while proceeding through the level.
L'opera Dramatique: Kill the chainsaw mini-boss. Kill all the zombies in one or two room after that and the guitar will appear.
In Processing: Found while proceeding through the level.
Pick locations
Picks can be found at the following locations.
Foghorn Cafe
Clear the second room then go all the way back to the room before the one that you started at. Complete the time trial to get the pick.
Ivy Trail
Reach the area where you can either go up or right. Continue going to the right until you reach the time trial. Complete the time trial to get the pick.
Gray Fortress
Clear the large room with the jet-pack cyborgs then enter the room on the right side of that area. The pick is inside a container.
St. Crux Cemetery
Go to the right from the room where you found the cemetery key. Pass the vendor bot, then go up using the shift blade until you find the killer solo amp.
Nord Trainyard
Complete the time trial when you first enter the warehouse to get the pick.
Drome Rail
Get the crusher dish magic and enter the next room. Complete the time trial to get the pick.
Under the Samurai difficulty, you will become caged in and attacked on your way to the last cart. Kill the enemies and the killer solo amp will appear.
L'Opera Dramatique
Clear the enemies at theater entrance. The killer solo amp will appear above the entrance
From the last killer amp, use your shift blade and go up to find an opening in ceiling. The pick is in the container.
Under the Samurai difficulty defeat the chainsaw boss then clear the zombie infested room. Break the container that drops down and the killer solo amp will appear.
Metatron District
Enter the room after you meet the chef. Complete the time trial to get the pick.
Grace Chapel
Clear the room before the locked chapel door.
Mono Catacombs
Clear the room full of zombies.
Cam Rooftops
Clear the third room.
A killer solo amp will appear before the last room.
Cam Lobby
While falling, move to the left wall. When dropping to the next room you should land on a platform with a container. Break open the container to get the pick.
In Processing
Complete the time trial after the vendor bot to get the pick.
Under the Samurai difficulty setting, the killer solo amp will appear in a room on the way to get the two electro-spheres.
Cam Core
Use the shift blade and go straight up in the first room to enter a room with a container. Break the container to get the pick.