Level-03: EXCITE
Level-04: EXCAVATE
Level-05: EXCALIBUR
Level-06: EXTORT
Level-07: EXPIRE
Level-08: EXACT
Level-09: EXHALE
Level-10: EXHUME
Level-11: EXONERATE
Level-12: EXPEL
Level-13: SEVERE
Level-14: SURVIVE
Level-15: SAVANT
Level-16: SUFFER
Level-17: SULPHER
Level-18: SERVE
Level-19: SEETHE
Level-20: SEVERAL
Level-21: SEVERANCE
Level-22: SAVAGE
Level-23: SACROSANCT (last level with enemy firing Rocket Propelled Grenades at you!)
As Sever type savage
As Sever type Severe
VORACIOUS
VENDETTA