If you're having trouble jumping, or falling off ledges, you might want to try this code. To Get the third person perspective, go to the console, and type "chase_active 1". Now exit the console. You should be in the 3rd person perspective. To get out of the third person perspective go to the console, type "chase_active 0". Exit the console, and it should be back in the first person perspective

To change levels, push the tilde key [~] and enter

CHANGELEVEL level_name

Where level_name is the name of the desired level.

Levels
DEMO* <1-3>
VILLAGE* <1–5>
RIDER1A
MESO* <1-6>
EGYPT* <1-6>
RIDER2C
ROMERIC* <1-7>
CASTLE* <4-5>
CATH
TOWER
EIDOLON
Rider

* Enter a value within given parameters

To activate a cheat, push the tilde key [~] and enter its corresponding code below.

Cheat                              Code
Adjust skill level*                SKILL<0-3>
All items                          IMPULSE 43
All weapons and manna              IMPULSE 9
Become Assassin                    IMPULSE 174
Become Crusader                    IMPUSLE 172
Become Necromancer                 IMPULSE 173
Become Paladin                     IMPULSE 171
Boots                              IMPULSE 109
Change class*                      PLAYERCLASS<1-4>
Change name*                       NAME
Change weapon*                     IMPULSE <1-4>
Chase camera                       CHASE_ACTIVE 1
Chaos device                       IMPULSE 104
Coefficient of friction*           SV_FRICTION<-10 - +10>
Display server flags               IMPULSE 149
Enable crosshair                   CROSSHAIR 1
Force Cube                         IMPULSE 113
Freeze monsters                    IMPULSE 36
Glyph                              IMPULSE 108
God mode                           GOD
Gravity*                           SV_GRAVITY<-10,000 - +10,000>
Health points*                     GIVE <0-999>
Icon definition                    IMPULSE 114
Increase experience points         IMPULSE 41
Increase level +1                  IMPULSE 40
Invisibility                       IMPULSE 107
Krater                             IMPULSE 103
Mouse controls camera              +MLOOK
Mystic Urn                         IMPULSE 102
No monsters                        IMPULSE 35
No peep                            IMPUSLE 111
Passive enemies                    NOTARGET
Quartz flask                       IMPULSE 101
Repulsion                          IMPULSE 110
Restart game                       IMPULSE 99
Restart level                      RESTART
Ring of Flight                     IMPULSE 112
Set server flags                   IMPULSE 11
Sheep Mode                         IMPULSE 14
Show coordinates                   IMPULSE 42
Summon stone                       IMPULSE 106
Switch view (cooperative play)     IMPULSE 33
Thaw frozen monsters               IMPULSE 37
Throw item                         IMPULSE 44
Toggle clipping                    NOCLIP
Toggle flying                      IMPULSE 39
Tome of Power                      IMPULSE 25
Tome of Tower                      IMPULSE 105
Torch                              IMPULSE 100
Use selected inventory item        IMPULSE 23
Weapon*                            GIVE <2-4>
Weapons and manna                  IMPULSE 9
Weapon select                      IMPULSE 10
Weapon select (reverse order)      IMPULSE 13

* Enter a value within given parameters