Here are some great bass lines from Annihilator, some of them are challenging at times and most of them are very fun to play:

15 Best

1. Brain Dance
2. Alison In Hell
3. Epic of War
4. Back To The Palace
5. One
6. Never Neverland
7. Fantastic Things
8. Hell Is War
9. Phoenix Rising
10. In The Blood
11. Sounds Good To Me
12. Stonewall
13. The Fun Palace
14. WTYD
15. Like Father Like Gun

PS. you can find them all on guitar pro