The following are known Action Replay Codes for Lock’s Quest on Nintendo DS (NDS).

Game ID: CSPE-ECDDDE08

All Turrets, Tripwires & Helpers
120c1bc0 0000ffff
220c1bc2 00000001

Max / Infinite Source
021bcc94 000f423f

TIME CODES:

Freeze Timer: Hold SELECT to advance time
a4000130 fffb0000
221bcc74 00000000
d2000000 00000000

Fast Forward Time: Hold SELECT and Press R
920c31ce 00000104
db000000 021bcc78
d4000000 00000001
d8000000 021bcc78
d2000000 00000000